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7-Channel Amplifier-Attenuator

Low-noise AC-coupled attenuation or amplification up to 40 dB for hexaphonic or polyphonic processing


The 7-Channel Amplifier-Attenuator can be ordered with one of three gain options: 20 dB, 30 dB, or 40 dB.

Amplifier boards are easily replaceable with different gain versions.  Check the shop for replacement boards.

Gain controls allow you to adjust the gain from zero to full-scale in the amplified string outputs.

Ideal for guitar multi-channel, single-string, or hexaphonic effects processing.

Version 3 of this module features the latest SynQuaNon Audio Bus connections on the back.

Hand-assembled in the USA.


  • Precision metal-film resistors for close channel matching.

  • Low-noise audio op-amps for optimal AC performance.

  • Selectable output gain range (1x or 10x, 30x, 100x) on back of module.

  • Adjustable gain or attenuation to zero within each selected gain range.

  • Pairs well with 13-Pin Input Breakout, Hex VU Meter, Hex Fuzz, Hex VCF, Hex VCA, and Hex EF-Gate-Trigger.

  • Version 3 of the module is equipped with SynQuaNon Audio Bus Input and Output connections.

Technical Specifications:

Width     12 HP

Depth     40 mm

Power     15 mA @ +12V

                 15 mA @  -12V

                  0 mA @  +5V

Gain        0-20 dB, 0-30 dB or 0-40 dB optional

Reverse power protection, resettable fuses, extensive power supply filtering

View the v3 Manual

View the v2 Manual

View the v2 Board Replacement Manual

View on ModularGrid

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