https://www.dae-audio.ca/dae-blog daily 0.75 2026-03-26 https://www.dae-audio.ca/dae-blog/2026/3/26/make-before-break-part-2-or-if-you-cant-beat-them-join-them monthly 0.5 2026-03-30 https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/bc78ed9a-46de-4fe4-898f-e0f670e803d6/V4.2+Attenuator+Ladder+Level+Resistors.png Blog - If You Can't Beat Them, Join Them - Make it stand out DÆ v4.2 stepped attenuator ladder level printed circuit board resistor array side. https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/6b07dfa2-9915-47b6-a131-733b2b612043/V4.2+Attenuator+Ladder+Level+Switches.png Blog - If You Can't Beat Them, Join Them - Make it stand out DÆ v4.2 stepped attenuator ladder level printed circuit board reed switch side. https://www.dae-audio.ca/dae-blog/2025/10/12/more-data-to-get-in-the-way-of-a-good-story monthly 0.5 2026-03-29 https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/2ceee1b6-c6c0-417c-8eb9-86977accd179/Alps+Potentiometer+Testing+Rig+October+12%2C+2025.jpg Blog - More Data to Get in the Way of a Good Story... - Make it stand out Jig to test gang error for Alps RK271 potentiometer. https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/3d83ad1a-2deb-48b7-b3df-b2381a8a766e/Measured+Attenuation+for+Alps+Blue+Velvet+RK27112A0A16+October+12%2C+2025.png Blog - More Data to Get in the Way of a Good Story... - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://www.dae-audio.ca/dae-blog/2025/9/24/measured-attenuation-for-dae-v42-attenuator-sn054 monthly 0.5 2025-10-12 https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/15d15143-1e83-461f-8618-591f4589b70b/Measured+Attenuation+for+DAE+v4.2+Attenuator+SN054+September+22%2C+2025.png Blog - Measured Attenuation for DÆ v4.2 Attenuator - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://www.dae-audio.ca/dae-blog/2024/3/20/ps-gnd-what-is-that monthly 0.5 2024-03-21 https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/95fe5a32-335a-4811-957e-a619ea873aa7/IMG_3633.jpg Blog - PS Gnd ... what is that? - Make it stand out Photo of rear of DÆ Phono Preamp v4.0. Note terminal at the right labeled “PS Gnd” https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/0471b535-0a21-4b8f-9532-05b094b3c7ab/SN051+RCA+Distortin+1+Volt+out+RCA%2B+to+XLR%2B+RCA-+to+XLR-+Shld+connected+only+at+XLR+side+on+L4562+2+with+PS+Grond+Disconnected.png Blog - PS Gnd ... what is that? - Make it stand out DÆ Output Board v1.0 in the enclosure but without a connection to the PS Gnd terminal. https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/efeb6677-1367-4943-af6d-99fe5622c2fe/SN051+RCA+Distortin+1+Volt+out+RCA%2B+to+XLR%2B+RCA-+to+XLR-+Shld+connected+only+at+XLR+side+on+L4562+2.png Blog - PS Gnd ... what is that? - Make it stand out DÆ Output Board v1.0 in the enclosure with a connection to the PS Gnd terminal. https://www.dae-audio.ca/dae-blog/2024/3/17/a-study-of-low-noise-measurements-cutting-the-grass monthly 0.5 2024-03-18 https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1fcdf013-4073-4e87-9e56-6ecb227109b1/SN051+Right+RCA+1+Volt+Distortion+with+notch+filter+cables+not+bundled.png Blog - A Study of Low Noise Measurements ... Cutting the Grass - Make it stand out Distortion Measurement of DÆ Output Board v1.0 at the RCA jack. What is all the “grass” above about 2kHz. https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/43983901-7734-4599-9386-6f10fc2e0575/Measuremnet+Setup+RCA+2.png Blog - A Study of Low Noise Measurements ... Cutting the Grass - Make it stand out Measurement Setup https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/26c1e72e-a2a6-47d3-9f76-0ee5ef391a1b/Measurement+Setup+RCA+3.png Blog - A Study of Low Noise Measurements ... Cutting the Grass - Make it stand out Diagram of measurement chain. https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/50efdb7e-82e6-49dc-9c77-9a804e1bdbf0/SN051+Right+RCA+1+Volt+Distortion+with+notch+filter.png Blog - A Study of Low Noise Measurements ... Cutting the Grass - Make it stand out Distortion Measurement of DÆ Output Board v1.0 at the RCA jack after the grass was cut simply by bundling the the cables to an from the DÆ Output Board v1.0 to reduce the open area for noise pick-up. https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/57bfb049-bd32-4733-8bee-40a26c642652/XLR+to+RCA+Interconnect+with+broken+sheild.png Blog - A Study of Low Noise Measurements ... Cutting the Grass - Make it stand out XLR to RCA cable with cable shield disconncted at the end with the RCA connector. https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/4ea5f348-c68d-4e34-90b8-a1ff611b2bc7/SN051+RCA+Distortin+1+Volt+out+RCA%2B+to+XLR%2B+RCA-+to+XLR-+Shld+connected+only+at+XLR+side+on+L4562+2.png Blog - A Study of Low Noise Measurements ... Cutting the Grass - Make it stand out Distortion Measurement of DÆ Output Board v1.0 at the RCA jack with custom XLR to RCA interconnect cable with the cable shield left disconnected at the RCA plug to avoid forming the ground loop. https://www.dae-audio.ca/dae-blog/2024/2/4/d-output-board monthly 0.5 2024-04-11 https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/8bc1b044-f9d5-4d5d-a8a1-8168929c330c/IMG_3468.jpg Blog - DÆ Output Board - Make it stand out DÆ v1.0 Output Board https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/6231a7c1-8616-4543-992f-152d23eb9703/Output+Stages.jpg Blog - DÆ Output Board - Make it stand out Left: Common-Collector also known as Emitter-Follower which is commonly seen in output stages. Right: Common-Emitter which is rare but out of interest used in DÆ Output stage. https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/59b1b7a5-8c4f-4eae-97ee-046bfbede655/SN051+Right+XLR+2+Volt+Total+%2B-1+Volt+Distortion+with+notch+filter.png Blog - DÆ Output Board - Make it stand out Measured response of the DÆ Output Board v1.0 at 1 kHz. This is for the XLR output with 1 volts RMS input and 2 volts RMS output between the XLR non-inverting and inverting terminals. https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/10b6c082-9391-4ca6-bc3b-2d28a8a08c19/Excel+Summary+March+14%2C+2024.png Blog - DÆ Output Board - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://www.dae-audio.ca/dae-blog/2024/2/2/d-battery-pack-v10-completed monthly 0.5 2024-02-03 https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/39422d7e-521a-4ac6-bf55-1c632a0bd961/IMG_3467.jpg Blog - DÆ Battery Pack v1.0 - Completed - Make it stand out DÆ Battery Pack v1.0. https://www.dae-audio.ca/dae-blog/2023/1/18/d-battery-pack-v10 monthly 0.5 2023-01-20 https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/2b0f5a36-9173-4d59-8a84-832bc1549659/DAE+Battery+Pack+v1.0++Five+Cell+Front.jpg Blog - DÆ Battery Pack v1.0 - Make it stand out DÆ Battery Pack v1.0 lower bank with five 18650 cells. Battery side. https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1616444456794-X7DOJ12Q94RT6RTI536X/IMG_3073.jpg Blog - DÆ Battery Pack v1.0 - Make it stand out Interior of DÆ Phono Pre-amp v3.0. Note the phono preamp electronics on the rear panel, battery pack with six sealed lead acid batteries and “Sort of Analog Panel Meter” on the front panel. https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/74ccbf74-2fb9-42c6-8c88-4fce448e5da6/DAE+Battery+Pack+v1.0++Five+Cell+Rear.jpg Blog - DÆ Battery Pack v1.0 - Make it stand out DÆ Battery Pack v1.0 lower bank with five 18650 cells. Battery Management System Side. https://www.dae-audio.ca/dae-blog/2023/1/13/stepped-attenuators-v30-v31-and-v40 monthly 0.5 2023-01-13 https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/6f0c8c2b-283e-42f5-91cf-47e2d110ea4e/IMG_3330.jpg Blog - Stepped Attenuators v3.0, v3.1 and v4.0 - Make it stand out Stepped Attenuators v3.0, v3.1 and v4.0. Each of the attenuators in the figure has 24 total levels. https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/36dcf942-6a91-42a7-8e3b-4526be91b4bf/IMG_3331.jpg Blog - Stepped Attenuators v3.0, v3.1 and v4.0 - Make it stand out A v3.0 ladder level. Note the use of through hole resistors and reed switches. https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/5e128cd1-3d86-4a45-84aa-4995a672899e/IMG_3334.jpg Blog - Stepped Attenuators v3.0, v3.1 and v4.0 - Make it stand out A v3.1 ladder level. Note the use of a flex PCB and surface mount reed switches and MELF resistors. https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/b3412f7d-0f64-487f-b70e-3d8d797940d1/IMG_3342.jpg Blog - Stepped Attenuators v3.0, v3.1 and v4.0 - Make it stand out A v3.1 ladder level flex PCB laid flat. Note surface mount reed switches and MELF resistors. https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/123c9fe7-a1c6-40bc-a2ba-d7e98b47a017/IMG_3335.jpg Blog - Stepped Attenuators v3.0, v3.1 and v4.0 - Make it stand out Reed switch side of the v4.0 ladder level. Note 24 reed switches per level which equals 24 steps per level. https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/ac7dabe9-f793-4ef5-b197-feefaec21dcf/IMG_3336.jpg Blog - Stepped Attenuators v3.0, v3.1 and v4.0 - Make it stand out Resistor side of the v4.0 ladder level. A total of 48 MELF resistors for the 24 steps on a level. https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/b0071132-9ed2-488c-b183-c90863f178ca/IMG_3341.jpg Blog - Stepped Attenuators v3.0, v3.1 and v4.0 - Make it stand out Stepped attenuator. From left to right - v3.0, v3.1 and v4.0. v3.0 and v3.1 have twelve steps per level and v4.0 has 24. https://www.dae-audio.ca/dae-blog/2022/2/17/reed-switch-measurements monthly 0.5 2026-02-07 https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1647355161397-F3CIL30JGBIHNN26MRKW/S20220315_0006.jpg Blog - Reed Switch Testing - Make it stand out Reed Switch Close-up 1. https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1637854134197-287VJ21KJXRJYBXGRHZ8/IMG_3217.jpg Blog - Reed Switch Testing - Make it stand out v3.0 Attenuator Level https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1647354716586-CUJAD9E68Y6Q66C53HN8/S20220315_0002.jpg Blog - Reed Switch Testing - Make it stand out Reed Switch Close-up 2. https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1647348057309-I13Y3DJ3VFV3H45LHGXP/IMG_3250.JPG Blog - Reed Switch Testing - Make it stand out Reed Switch Tester https://www.dae-audio.ca/dae-blog/2021/12/13/wiper-motion monthly 0.5 2021-12-13 https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1639432446727-QT34ANEO7QZPB0A3JYPC/Circular+Motion+2.png Blog - Wiper Motion - Circular Motion - Circular Motion - Rotation of the yoke is counter-clockwise (CCW) from step 1 to 12. There is a level change and CCW rotation from step 12 to 13 and then the yoke rotation is CCW from step 13 to 24. https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1639428032619-ACR3XZSWO7U23ZDFP7BR/Wiper+Motion.png Blog - Wiper Motion - Make it stand out Wiper Motion - Rotation of the yoke is counter-clockwise (CCW) from step 1 to 12. There is only a level change from step 12 to 13 and the the yoke rotates clockwise (CW) from step 13 to 24. https://www.dae-audio.ca/dae-blog/2021/11/28/make-before-break monthly 0.5 2026-03-26 https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1637854134197-287VJ21KJXRJYBXGRHZ8/IMG_3217.jpg Blog - Make Before Break - Make it stand out v3.0 Attenuator Level. https://www.dae-audio.ca/dae-blog/2021/5/19/some-data-to-get-in-the-way-of-a-good-story monthly 0.5 2021-05-21 https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1621443768175-YRU7VTZVGNRF2D1YBYN0/SN044+QA401+-40+dBV+1kHz.png Blog - Some Data to Get in the Way of a Good Story... - Make it stand out First measurement of DÆ v3.0 Phono Preamp with an output of 1 Vrms at 1 kHz. https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1621445645630-FW8VGRPEZN7C5WCNNDCT/SN044+QA480+0-40+dBV+1kHz.png Blog - Some Data to Get in the Way of a Good Story... - Make it stand out Measurement of DÆ v3.0 Phono Preamp with an output of 1 Vrms at 1 kHz from a QA480 and 40 dB attenuator. https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1621445788380-N4637GOCQX92N2HIEM8K/SN044+THD+%2B+N+vs+Output.png Blog - Some Data to Get in the Way of a Good Story... - Make it stand out THD + N as a function of Output Level for the DAE v3.0 Phono Preamp. https://www.dae-audio.ca/dae-blog/2021/5/9/some-thoughts-on-sinad-and-phono-preamp-design monthly 0.5 2021-05-19 https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1620647054533-N1JJM9U54VHJYEGWZGZU/GettyImages-1213661187.jpg Blog - Some Thoughts on SINAD and Phono Preamp Design… https://www.dae-audio.ca/dae-blog/2021/3/21/phono-preamp-v30 monthly 0.5 2021-04-02 https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1616444855779-DV6EOF3EY3WOG5UPFQ8X/IMG_3076.jpg Blog - v3.0 Phono Preamp Phono Preamp Front Corner https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1616444332279-MXZ2RZF5UQY9QY7JIQJ8/IMG_3074.jpg Blog - v3.0 Phono Preamp Phono Preamp Rear - Note that the right and left channels have both balanced (XLR) and single ended (RCA) outputs. https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1616444456794-X7DOJ12Q94RT6RTI536X/IMG_3073.jpg Blog - v3.0 Phono Preamp Phono Preamp Top, Cover Removed https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1616444629734-5ZHIE41GPT88GCLHMHUO/IMG_3068.jpg Blog - v3.0 Phono Preamp Phono Preamp Side, Covers Removed - Note Battery Charger/Power Supply in the fore ground. https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1616444694136-79W41K3QBIF4XZKGPLE6/IMG_3070.jpg Blog - v3.0 Phono Preamp Phono Preamp Meter, Cover Removed https://www.dae-audio.ca/dae-blog/2021/1/26/v30-preamp monthly 0.5 2021-04-02 https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1611673193583-RRYMZV3LVRSS3EPTPUV4/IMG_3021.jpg Blog - v3.0 Preamp v3.0 Preamp Circuit Top https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1611673124142-7UCGIVH1JZ284C3LG0V2/IMG_3022.jpg Blog - v3.0 Preamp v3.0 Preamp Circuit Top Edge. https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1611673336278-FEKK6V7RZDLQUEJ393MC/IMG_3023.jpg Blog - v3.0 Preamp v3.0 Preamp Rear Panel https://www.dae-audio.ca/dae-blog/2020/10/23/differential-input monthly 0.5 2020-10-23 https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1603463300015-S2R2UELE0K40WKJ85MOF/IMG_3001.jpg Blog - Differential Input DÆ v0.1 Differential Input Profile https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1603463509757-Q5PFR60LZQ0EBUV6C9AG/IMG_2999.jpg Blog - Differential Input DÆ v0.1 Differential Input Top https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1603463454509-XPYN8KQYLP1OYYJZVJ0K/IMG_3002.jpg Blog - Differential Input DÆ v0.1 Differential Input Bottom https://www.dae-audio.ca/dae-blog/2020/9/9/v30-battery-chargerpower-supply monthly 0.5 2020-09-09 https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1599655988136-G3AY4CC0BCFGWGCXDV4D/IMG_2986.jpg Blog - v3.0 Battery Charger/Power Supply DÆ v3.0 Battery Charger/Power Supply Top https://www.dae-audio.ca/dae-blog/2020/6/1/v30-attenuator monthly 0.5 2020-07-02 https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1591025401886-GR03JFOD456F559MBVST/IMG_1144+%282%29.JPG Blog - v3.0 Attenuator DÆ v3.0 Stepped Attenuator Front Corner https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1591025432203-ZAUC17PCP04L285U31T6/IMG_1145+%282%29.JPG Blog - v3.0 Attenuator DÆ v3.0 Stepped Attenuator Top View https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1591025472074-J0OPF4LWFSFIGY8VL169/IMG_1146+%282%29.JPG Blog - v3.0 Attenuator DÆ v3.0 Stepped Attenuator Rear View https://www.dae-audio.ca/dae-blog/2020/5/23/phono-preamp-v21-update monthly 0.5 2020-07-03 https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1590235094748-VEX0S8JEWBRQZEER3RAJ/IMG_1137+%282%29.JPG Blog - Phono Preamp v2.1 Update DÆ Phono Preamp v2.1 Top view. https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1590235187836-SORRHIKR912IAKVRHK6N/IMG_1138+%282%29.JPG Blog - Phono Preamp v2.1 Update DÆ Phono Preamp v2.1 Bottom View. From left to right notice the balanced XLR output with the single ended RCA output below it, the binding post for the ground terminal and the input RCA connector. https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1590248155573-CWEJLUW1SO3WE8RZYJGT/IMG_1136+%282%29.JPG Blog - Phono Preamp v2.1 Update DÆ Phono Preamp v2.1 Profile Showing the Heatsink. https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1590248343412-3MPUAP85J1FAZDT6URP5/IMG_1139+%283%29.JPG Blog - Phono Preamp v2.1 Update DÆ Phono Preamp v2.1 Profile Showing the Rear of the XLR Connector. https://www.dae-audio.ca/dae-blog/2020/5/19/sort-of-analog-panel-meter monthly 0.5 2020-05-19 https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1589891128586-T3LK11FLART6D9GB188N/IMG_1127+%282%29.JPG Blog - "Sort of Analog Panel Meter" DÆ v0.1 “Sort of Analog Panel Meter” Front View. https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1589892778365-TLNZK006M56DQ3AW9MJW/IMG_1129%2B%25282%2529.jpg Blog - "Sort of Analog Panel Meter" DÆ v0.1 “Sort of Analog Panel Meter” Rear View. https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1589892414590-7IJWU0IZYBGZ9B3NINTH/IMG_1128+%282%29.JPG Blog - "Sort of Analog Panel Meter" DÆ v0.1 “Sort of Analog Panel Meter” Side View. https://www.dae-audio.ca/dae-blog/2020/4/9/so-what-have-i-been-up-to-lately monthly 0.5 2020-07-03 https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1586430167116-7MUQ90YFMMHWJ88QRN7B/IMG_0882.JPG Blog - A Panel Meter is born... DÆ v0.1 Panel Meter. https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1586431105574-I5X4VGCJGQAYPCWJRNTM/IMG_0884.jpg Blog - A Panel Meter is born... Traditional Style Panel Voltmeter https://www.dae-audio.ca/dae-blog/2020/2/17/ponoko-blog monthly 0.5 2020-07-03 https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1581973235564-RHVEHE1GOZPKCA2UFTTF/Annotation+2020-02-17+155900.png Blog - Ponoko Blog Ponoko Blog https://www.dae-audio.ca/dae-blog/2020/1/24/shipping-crates-for-the-v30-attenuators monthly 0.5 2020-04-09 https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1579869511326-19QI7LGFWJOWOPPEQ28G/IMG_0873.jpg Blog - A Shipping Crate for the v3.0 Attenuator and … v3.0 Attenuator “Shipping Crate” closed. https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1579869594067-CF7KH15MXH4UUQGH29XY/IMG_0870.JPG Blog - A Shipping Crate for the v3.0 Attenuator and … v3.0 “Shipping Crate” open. https://www.dae-audio.ca/dae-blog/2019/12/17/phono-preamp-v21 monthly 0.5 2020-07-03 https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1576591184751-WUWMDXG1P72N2AGADEGB/IMG_0867.jpg Blog - Phono Preamp v2.1 Phono Preamp v2.1 https://www.dae-audio.ca/dae-blog/2019/12/13/the-v30-attenuators-are-coming monthly 0.5 2019-12-13 https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1576244001530-D3SKPU2ML4H47FSYFT0O/IMG_0864.jpg Blog - The v3.0 Attenuators are coming Rear of v3.0 attenuator. https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1576244528012-1WEBH4TAXCKQ5J8U4CWZ/IMG_0863.jpg Blog - The v3.0 Attenuators are coming Ladder section of v3.0 attenuator. https://www.dae-audio.ca/dae-blog/2019/9/19/quantasylum-qa401-audio-analyzer monthly 0.5 2020-07-03 https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1568896923166-48ARC2BB3G09BWO08H7M/IMG_0851.jpg Blog - QuantAsylum QA401 Audio Analyzer QuantAsylum QA401 Audio Analyzer https://www.dae-audio.ca/dae-blog/2019/8/23/glue-strong-stuff- monthly 0.5 2019-08-23 https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1566569683259-A69D4I09BEXD3KPJDQE9/image-asset.jpeg Blog - This is Glue. Strong stuff. Not these Blues Brothers. Photo by jpenner/iStock / Getty Images https://www.dae-audio.ca/dae-blog/2019/8/9/finally-a-sealed-v22-acrylic monthly 0.5 2019-08-09 https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1565351535977-56P5QLWVH7RLE0TNN9D6/IMG_0843.JPG Blog - Finally a Sealed v2.2 Acrylic Enclosure Acrylic version of v2.2 holding a vacuum. https://www.dae-audio.ca/dae-blog/2019/8/4/more-vacuum-leak-troubleshooting monthly 0.5 2019-08-23 https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1564951239441-JUWXM1V7P48GEG0XQ77E/IMG_0842.jpg Blog - More Vacuum Leak Troubleshooting Vacuum degassing chamber. https://www.dae-audio.ca/dae-blog/2019/7/31/and-then-there-were-two monthly 0.5 2019-07-31 https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1564575685406-QWDIGHTL85V95K2VPCGW/IMG_0833.jpg Blog - And then there were 2… v2.2 Headless attenuators! https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1564576222282-GYKAKDU8PFTE2XGJFSRQ/IMG_0837.jpg Blog - And then there were 2… v2.2 Headless attenuators and associated remote. https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1564576383008-GDM4A2S1YCXMR78X6QCD/IMG_0840.jpg Blog - And then there were 2… v2.2 Headless attenuators rear. https://www.dae-audio.ca/dae-blog/2019/7/11/v30-attenuator monthly 0.5 2019-07-11 https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1562847169818-9PMI65WMR4C5PMJ442ON/IMG_0831.jpg Blog - v3.0 Attenuator v3.0 attenuator front. https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1562847325371-KIAN4BKY74KH744UKRJJ/IMG_0829.jpg Blog - v3.0 Attenuator v3.0 attenuator top. https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1562848133612-F9TA0OA9A7A6E9EU7NFA/IMG_0830.jpg Blog - v3.0 Attenuator v3.0 attenuator rear view. https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1562848338940-HL7Y78CEJ8M22CFU3MFU/IMG_0832.jpg Blog - v3.0 Attenuator v2.2 attenuator (left) and v3.0 attenuator (right) compared. https://www.dae-audio.ca/dae-blog/2019/6/27/eureka-at-long-last monthly 0.5 2019-07-08 https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1561635330329-FUEOF0FMSD4N6NZIM152/IMG_0825.jpg Blog - Eureka ... at long last Front right corner of v2.2 headless attenuator. https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1561635467352-TKXOIOLP31PUX4WGBHCG/IMG_0826.jpg Blog - Eureka ... at long last Top of v2.2 headless attenuator. https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1561635580784-E3IG807X2R7382YC0SHJ/IMG_0827.jpg Blog - Eureka ... at long last Rear left corner of v2.2 headless attenuator. https://www.dae-audio.ca/dae-blog/2019/5/25/troubles monthly 0.5 2019-05-25 https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1558789055576-7IPJVYFPEV8MDKJT0XWM/IMG_0813.jpg Blog - Troubles 0.5 mm flex cables at both ends of the attenuator. https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1558789146107-EY0E3B8IYGEMVGRAHYOQ/IMG_0822.JPG Blog - Troubles “Pitch Converter” PCB. https://www.dae-audio.ca/dae-blog/2019/5/7/into-the-reeds monthly 0.5 2019-05-09 https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1557272521152-HL6BT9Y3M4FVKL7RI9NK/image-asset.jpeg Blog - Into the Reeds Reeds! https://www.dae-audio.ca/dae-blog/2019/4/28/flex-cables monthly 0.5 2019-04-29 https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1556490235878-J91GDA6V03HCVQ3S479A/IMG_0808.jpg Blog - Flex Cables Ladder sections with white flex cable. https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1556489902638-ALKI79VSSDCSXEM0S9NF/IMG_0810.jpg Blog - Flex Cables Comparison between 1 mm pitch (left) and 0.5 mm pitch (right) flex cables. Note that the 0.5 mm cable has a connector attached at the top. https://www.dae-audio.ca/dae-blog/2019/4/28/ladder-section-repaired monthly 0.5 2019-04-28 https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1556450583710-5KPCEGNSWDMC9QILYSFV/IMG_0807.jpg Blog - Ladder Sections Repaired Repaired ladder section. https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1556451565431-KC4V4ETYM04DOVD1ND9Y/IMG_0808.jpg Blog - Ladder Sections Repaired A 24 step attenuator. https://www.dae-audio.ca/dae-blog/2019/4/20/v22-assembled monthly 0.5 2019-04-20 https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1555801734359-9XI8LSLTQARGX0F5CUNT/IMG_0802.jpg Blog - v2.2 Assembled v2.2 Stepped attenuator front corner. https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1555802619948-Y6UV7A65LXOJDH29MBW6/IMG_0803.jpg Blog - v2.2 Assembled v2.2 Stepped attenuator side view. https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1555802713441-MSKNYM3ROH3QXGKT3M37/IMG_0804.jpg Blog - v2.2 Assembled v2.2 Stepped attenuator rear corner. https://www.dae-audio.ca/dae-blog/2019/4/7/making-progress monthly 0.5 2019-04-07 https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1554648108862-G5O6SSRCBZXHK0TL3P9H/IMG_0799.JPG Blog - Making Progress v2.2 Stepped attenuator under construction and testing. https://www.dae-audio.ca/dae-blog/2019/3/28/just-arrived monthly 0.5 2019-04-07 https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1553798663288-US0AGX5QMZIOLZ0D1ZB4/IMG_0796.jpg Blog - Just Arrived Control board for the DÆ Stepped Attenuator v2.2. https://www.dae-audio.ca/dae-blog/2019/3/18/v22 monthly 0.5 2019-03-18 https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1552912120611-22THC45K13A8PCKTAYU7/IMG_0789.jpg Blog - v2.2 Stepped Attenuator Stepped attenuator v2.1. The overall resistance of the ladder is 10 kΩ and there are 24 steps. Note tiny white telecom relays and that two parallel resistors are used for each ladder section for improved accuracy. https://www.dae-audio.ca/dae-blog/2019/3/5/sorry-for-the-long-delay monthly 0.5 2019-03-18 https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1551790059214-5B17I7DKXJEYFM7GAN81/IMG_0779.jpg Blog - Sorry for the Long Delay... The remote completed! https://www.dae-audio.ca/dae-blog/2019/2/4/off-to-the-races monthly 0.5 2019-03-05 https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1549285553079-UDSJBZ8P72RX9CFVZCIT/IMG_0776.jpg Blog - Off to the Races The remote is coming together. https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1549286856693-VSAZREK36BE88L837CPW/IMG_0772.jpg Blog - Off to the Races Long-term vacuum testing including glass enclosure, sleeve valve and absolute vacuum sensor. https://www.dae-audio.ca/dae-blog/2019/1/16/sleeve-valve monthly 0.5 2019-03-05 https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1547670347752-HGZT7IFTCJ1RIPFGM0LW/IMG_0770.jpg Blog - Sleeve Valve Plus Sleeve valve near centre of image. https://www.dae-audio.ca/dae-blog/2018/12/31/new-cable-feed-through monthly 0.5 2018-12-31 https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1546271788803-DQSHBCHMCMEOAQYE4AMN/IMG_0769.JPG Blog - New Cable Feed Through New cable feed through. https://www.dae-audio.ca/dae-blog/2018/12/21/a-little-more-information monthly 0.5 2019-03-05 https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1545422424139-XWY28LF3T6LJYZEZHWCV/IMG_0760.jpg Blog - A Little More Information Acrylic vacuum chamber under water. https://www.dae-audio.ca/dae-blog/2018/12/7/progress-on-two-fronts monthly 0.5 2018-12-07 https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1544202303527-35ZL6J0HLCOZCMJ8442A/IMG_0756.JPG Blog - Progress on Two Fronts Rear aluminum plate of vacuum chamber showing flex cable surrounded by epoxy. https://www.dae-audio.ca/dae-blog/2018/11/30/fine-tuning monthly 0.5 2018-11-30 https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1543591694741-4K01CAKKRX6MD6H67ITF/IMG_0754.JPG Blog - DÆ Phono Preamp v2.0 Fine Tuning Fine tuning phono preamp with B&K Precision 880 LCR meter. https://www.dae-audio.ca/dae-blog/2018/11/26/ladder-attenuator-installed-its-very-quiet-with-vacuum-but monthly 0.5 2018-11-26 https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1543249240748-J6AYD8VHPASGHOHT829Z/IMG_0753.JPG Blog - Ladder Attenuator Installed - Its Very Quiet But.. Relay Switched Ladder Attenuator installed in glass vacuum chamber. https://www.dae-audio.ca/dae-blog/2018/11/19/success-with-vacuum-test monthly 0.5 2018-11-19 https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1542663964372-WB4MJZ8Z0IM2H68N70UH/IMG_0752.JPG Blog - Success with Vacuum Test Successful vacuum test on this attenuator including glass and aluminum vacuum chamber. https://www.dae-audio.ca/dae-blog/2018/11/9/initial-post monthly 0.5 2018-11-09 https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1541799831127-GCNOALL9O9TXDC331Z8O/IMG_0747.JPG Blog - Initial Post Prototype aluminum/glass version of stepped attenuator enclosure https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1541800091461-0TW6VU0W96ETDH4FJAVQ/IMG_0751.JPG Blog - Initial Post Prototype acrylic version for comparison https://www.dae-audio.ca/dae-projects daily 0.75 2023-02-14 https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1519410179156-V4RH872C513L096EF0RX/508+%282%29.JPG Projects https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1541445709327-ZH5RCDDNE4S65TBP85SN/IMG_0725.JPG Projects - Passive Preamp - Right corner with power on and dark background https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1541782856161-44IO850HGL8FVJ99HP4T/IMG_0739.JPG Projects - Front right corner with power on https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1551789681728-FP3174EP5BPT22NCYOG4/IMG_0780.JPG Projects - Overview https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1590262443144-1PAPRK2K6A9LAA7OSA8C/IMG_1139+%283%29.JPG Projects - DÆ Phono Preamp v2.1 Profile showing XLR Connector Rear https://www.dae-audio.ca/modular-volume-v20 daily 0.75 2018-11-13 https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1541795965122-YXGRJWWFFJG8BQ0BA53N/IMG_0740.JPG DÆ Modular Stepped Attenuator v2.1 - Overview https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1541795965122-YXGRJWWFFJG8BQ0BA53N/IMG_0740.JPG DÆ Modular Stepped Attenuator v2.1 - Overview https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1541796189800-DYMRZO3RP4ORWWVR0WYX/IMG_0741.JPG DÆ Modular Stepped Attenuator v2.1 - Front https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1541796123419-NWZQPNYYU4SPHDCFXNCW/IMG_0742.JPG DÆ Modular Stepped Attenuator v2.1 - Rear https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1541796254344-5UJ0J0XWCF2H2KJEIZ2K/IMG_0743.JPG DÆ Modular Stepped Attenuator v2.1 - Top Note cylindrical acrylic vacuum enclosure around relay switched ladder attenuator. https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1541795843867-DZYDR2KHY1QWJOPH9EV5/IMG_0740.JPG DÆ Modular Stepped Attenuator v2.1 https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1501878650567-5VP5RIDKP0UBU95GT4HA/IMG_0645%5B1%5D.JPG DÆ Modular Stepped Attenuator v2.1 - Front https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1501887175990-Q6EZNIJKC81I36UO4A26/screen696x696.jpg DÆ Modular Stepped Attenuator v2.1 - iOS Remote Control Search for Dynamic Audio Engineering on the Apple App store for iOS remote control app. Sorry no Android app yet but happy to make one if there is sufficient interest. https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1501883759485-47BO6DM2URVALPRBSURY/image-asset.jpeg DÆ Modular Stepped Attenuator v2.1 - Bell in a Bell Jar Demostration of a vacuum chamber reducing the sound level of a bell. A classic physics experiment to prove that sound requires a media (air) to propagate and cannot travel through a vacuum. https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1541797703024-0DYRFEMQZC5SO70LL9CR/SDIM1550.JPG DÆ Modular Stepped Attenuator v2.1 - First Prototype A separate relay ladder attenuator printed circuit board in a 19 mm think rectangular vacuum enclosure. It worked but was very difficult, slow and expensive to build. A RaspberryPi on a second printed circuit board controlled the attenuator using a motorized potentiometer. https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1541796553289-5XGLNZR06LW8Z850GMCP/IMG_0744.JPG DÆ Modular Stepped Attenuator v2.1 - Second Prototype This version was in a cylindrical acrylic enclosure but DC motor on didn’t have enough torque to overcome friction of the shaft seals. https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1541796788517-M4PFVYJ1HO2BR435TSZA/IMG_0748.JPG DÆ Modular Stepped Attenuator v2.1 - Third Prototype aka v2.0 A cylindrical acrylic enclosure around the relay based stepped attenuator. A stepper motor with shaft position measurement works must better. Acrylic enclosure was a little too small to allow an effective seal. https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1501878541927-BUNQCEJ9Q4SY8PQB2MQT/IMG_0645%5B1%5D.JPG DÆ Modular Stepped Attenuator v2.1 https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1501878956529-VQ227G6GVOIC27IN02M7/IMG_0646%5B1%5D.JPG DÆ Modular Stepped Attenuator v2.1 https://www.dae-audio.ca/cover-page-coming-soon daily 0.75 2017-01-13 https://www.dae-audio.ca/dae-contact daily 0.75 2023-02-14 https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1484401947539-ZRYAZJL11LPRBWEJ1XWC/SDIM1533.JPG Contact https://www.dae-audio.ca/dae-about daily 0.75 2023-02-14 https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1501978845420-NYH8NGEZGSDZ7JIN9M7Z/image-asset.jpeg About Photo by jkitan/iStock / Getty Images https://www.dae-audio.ca/overview daily 1.0 2021-11-25 https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1624999085894-L9O1NBQFKU7JWUTOHFQE/IMG_3076.JPG Overview - Make it stand out DÆ v3.0 Phono Preamp https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1591025401886-GR03JFOD456F559MBVST/IMG_1144+%282%29.JPG Overview - Make it stand out DÆ v3.0 Attenuator https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1624992831715-2YN04NC8M7Z7NJF8V9RB/IMG_1139+%283%29.JPG Overview - Make it stand out Projects https://www.dae-audio.ca/d-v30-phono-preamp daily 0.75 2021-06-29 https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1616444855779-DV6EOF3EY3WOG5UPFQ8X/IMG_3076.jpg DÆ v3.0 Phono Preamp DÆ v3.0 Phono Preamp Front https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1616444456794-X7DOJ12Q94RT6RTI536X/IMG_3073.jpg DÆ v3.0 Phono Preamp Interior. Note the phono preamp electronics on the rear panel, battery pack with six sealed lead acid batteries and “Sort of Analog Panel Meter” on the front panel. https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1624978240520-6TLDZA4BD4TI4I61ZG5T/IMG_3074.JPG DÆ v3.0 Phono Preamp Rear panel. Note the RCA inputs and ground connection at the center of the chassis to connect the phono cartridge. Both balanced XLR and RCA outputs are available. A Vernier control is provided to fine tune the gain of the left channel and compensate for any gain errors between the two channels of the phono cartridge. Power is provided through a barrel connector at the lower left and a separate ground connection is provided for the metal chassis. https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1616444629734-5ZHIE41GPT88GCLHMHUO/IMG_3068.jpg DÆ v3.0 Phono Preamp - Make it stand out Interior. Note Battery Charger/Power Supply https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1616444694136-79W41K3QBIF4XZKGPLE6/IMG_3070.jpg DÆ v3.0 Phono Preamp - Make it stand out Interior. Note “Sort of Analog Panel Meter”. https://www.dae-audio.ca/dae-v30-dual-mono-block-preamplifier daily 0.75 2023-02-14 https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1626723529692-EMDA5LOMS2HHBH5J0OV5/IMG_3098.JPG DÆ v3.0 Dual Mono-block Preamplifier DÆ v3.0 Dual Mono-block Preamplifier. The right channel is in the separate enclosure on the top and the left channel is in the bottom enclosure. https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1626724169712-WAPYMVTBQZD67CGJAQ1Q/IMG_3100.JPG DÆ v3.0 Dual Mono-block Preamplifier Rear view. https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1626724601493-74VNR3BMIII41UNEKKTH/IMG_3115.JPG DÆ v3.0 Dual Mono-block Preamplifier - Make it stand out Front view with meters and panel lights illuminated. https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1626724477478-0OLC5F4IZPKSF2OQ8JME/IMG_3102.JPG DÆ v3.0 Dual Mono-block Preamplifier Rear view with wall adapter. https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1626724652022-GFL35W4KGQ56983M4KXA/IMG_3117.jpg DÆ v3.0 Dual Mono-block Preamplifier - Make it stand out Interior view. https://www.dae-audio.ca/v30-2 daily 0.75 2021-12-13 https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1637847404927-5Q5C7A706U0F5TA4DX84/IMG_3215.JPG DÆ Modular Stepped Attenuator v3.0 - Make it stand out v3.0 Attenuator Front https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1637847528373-Z952QS0JHZS2ER9NZSJX/IMG_3216.JPG DÆ Modular Stepped Attenuator v3.0 - Make it stand out Comparison of three level (left) and two level (right) attenuator. https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1637854134197-287VJ21KJXRJYBXGRHZ8/IMG_3217.JPG DÆ Modular Stepped Attenuator v3.0 - Make it stand out v3.0 Attenuator Level https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1637859331575-3ELXHFSQV1WD7HO1EUFV/IMG_3222.JPG DÆ Modular Stepped Attenuator v3.0 - Make it stand out v3.0 Attenuator Rear. https://images.squarespace-cdn.com/content/v1/58790d5b29687f2c9430875b/1637859642619-JMGK9YSP20D8XX0AXQ47/IMG_3223.JPG DÆ Modular Stepped Attenuator v3.0 - Make it stand out v3.0 Attenuator Bottom.