If you love the sound of "Unison" on your synths, this is one way to achieve that effect in Eurorack. This is a REALLY cool module. it's a simple idea, and probably one possible to achieve with some other more expensive modules in combination, but it achieves a really thick sonic effect and comes with that beautiful low Doepfer price.

I bought two but only need one. The one you are buying is completely unused, I only opened the box to take the photo for Reverb - haven't touched it. This is not Mint, it's 100% new.

From Doepfer's site:

Module A-137-2 is another version of a wave multiplier. In contrast to the  the A-137-2 generates four phase-shifted copies of a VCO signal applied to the audio input. The four shifted signals are added to the original signal to obtain a fat sound similar to five independent VCOs. 

The included image is supposed to be a signal diagram for the module. The YouTube video I linked in the sale shows some waves in and out of the module on an oscilloscope so you get an audio and visual understanding. 

Product Specs

Brand New (New)
A-137-2 VC Wave Multiplier II
Modular Synths, Eurorack
Made In


Listed via the Reverb App

Reverb App Reverb App

About The Seller

Mike's Studio
Joined Jun 2018
Beacon, NY, United States


Accepted Payment Methods

Shipping Policy

Available for local pickup from Beacon, NY

Ships from Beacon, NY to:

Continental U.S.
Everywhere Else

I will transfer the license to you digitally. Can be accomplished in minutes.

Tax Policies

United States - WA
Calculated at checkout

Return Policy

Return Window

This product can be returned within 14 days of receipt.

General Terms

Items must be returned in original, as-shipped condition with all original packaging and no signs of use. Buyer assumes responsibility for all return shipping costs unless the item was not received as described.


Buyer receives a full refund in their original payment method less any shipping costs.

  • 2 Watchers

Accepted Payment Methods

Credit Card
Reverb Bucks

As low as $14/month

Mike's Studio

Beacon, NY, United States
Joined: Jun 2018

Seller Achievements