• Overview
    • DÆ v3.0 Dual Mono-block Preamplifier
    • DÆ v3.0 Phono Preamp
    • DÆ Modular Stepped Attenuator v3.0
    • DÆ Modular Stepped Attenuator v2.1
  • Projects
  • Blog
  • Contact
  • About
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Dynamic Audio Engineering

...
Oakville, Ontario
...
Quiet, Precise, Beautiful...

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Dynamic Audio Engineering

  • Overview
  • Preamps
    • DÆ v3.0 Dual Mono-block Preamplifier
    • DÆ v3.0 Phono Preamp
  • Attenuators
    • DÆ Modular Stepped Attenuator v3.0
    • DÆ Modular Stepped Attenuator v2.1
  • Projects
  • Blog
  • Contact
  • About
Passive Preamp - Right corner with power on and dark background

DÆ Passive Preamp v2.1

Minimalist!

Two DAE Modular Stepped Attenuators v2.0 (even without the volume control knob) and not much more. Everything is controlled from the remote control.

All you need for great sound.

Specifications:

• attenuator has 24 steps. The steps are 0 dB, -3 dB, -6 dB …. -21 dB, -23 dB, -25 dB … -53 dB. See Modular Stepped Attenuator pages for additional details;

• attenuator total resistance = 2 kΩ;

• four inputs are provided: PH (phono), CD, 1 (auxiliary 1) and 2 (auxiliary 2);

• output cable length should be limited. Long output cables will cause a roll-off in the high frequency response because there is no output buffer (the preamp is passive);

• mahogany base, dyed red with clear satin varnish.

DÆ Passive Preamp v2.1

Minimalist!

Two DAE Modular Stepped Attenuators v2.0 (even without the volume control knob) and not much more. Everything is controlled from the remote control.

All you need for great sound.

Specifications:

• attenuator has 24 steps. The steps are 0 dB, -3 dB, -6 dB …. -21 dB, -23 dB, -25 dB … -53 dB. See Modular Stepped Attenuator pages for additional details;

• attenuator total resistance = 2 kΩ;

• four inputs are provided: PH (phono), CD, 1 (auxiliary 1) and 2 (auxiliary 2);

• output cable length should be limited. Long output cables will cause a roll-off in the high frequency response because there is no output buffer (the preamp is passive);

• mahogany base, dyed red with clear satin varnish.

Passive Preamp - Right corner with power on and dark background

Passive Preamp - Right corner with power on and dark background

Passive Preamp - Front corner

Passive Preamp - Front corner

Passive Preamp - Front

Passive Preamp - Front

Passive Preamp - Right side

Passive Preamp - Right side

Note hand valve at right edge of picture with vacuum port.

Passive Preamp - Right attenuator connections

Passive Preamp - Right attenuator connections

Passive Preamp - Top

Passive Preamp - Top

Note hand valve at the top edge of picture with vacuum port.

Passive Preamp - Right front corner with power on

Passive Preamp - Right front corner with power on

Passive Preamp - Right rear corner

Passive Preamp - Right rear corner

Passive Preamp - Right corner with power on

Passive Preamp - Right corner with power on

Passive Preamp - Original concept sketch

Passive Preamp - Original concept sketch