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Strymon AA.1 Amplifier Attenuator

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Strymon AA.1

Strymon's AA.1 is the perfect link between a eurorack modular synthesizer rig and guitar pedals. This compact 4HP module works great in tandem with modules sporting send/return functionality, such as Strymon's Magneto tape delay emulator. Simply connect a guitar or bass for easy routing into the modular abyss or send an instrument level stereo signal from a modular synthesizer into an external interface.

AA.1 features a 1/4" stereo input for amplifying instrument-level signals by +18dB. This input is routed through 1/8" stereo outputs that can also be run in mono simply by patching into the left channel only. Conversely, the adjacent L/R 1/8" ins attenuate those characteristically hot eurorack signals down to -18dB, outputting them through L/R 1/4" outputs.

AA.1 Features

  • Amplifier and attenuator module
  • 1/4" stereo input amplifies external signals by +18dB
  • 1/8" stereo input attenuates external signals by -18dB
  • Stereo outs can be converted to mono by patching into left channel only
  • 1x 1/4" input
  • 1x 1/4" stereo output
  • Eurorack module
  • Width: 4HP
  • Depth: 38mm
  • Current Draw: 10mA @ +12V, 10mA @ -12V


  • Gain: +18dB
  • Max Input Level (before soft clipping): 2.25Vpp
  • Max Output: 18Vpp
  • Input Impedance: 1 MΩ
  • Output Impedance: 1 kΩ
  • 20Hz – 20kHz, +/- 1dB


  • Gain: -18dB
  • Max Input Level (Nominal): 20Vpp
  • Max Output Level (Nominal): 2.5Vpp
  • Input Impedance: 8 kΩ
  • Output Impedance: 880 Ω
  • 20Hz – 20kHz, +/- 1dB
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