Doepfer A-136

Distortion / Waveshaper

The A-136 is a distortion and wavehaping module with extensive adjustment parameters. The input signal (audio- or control voltage), is first divided inside the module into 3 separate signal paths, which are mixed together at the output with adjustable gain (positive / negative):

By way of all the various possible settings of the 5 parameters, very complex waveform distortions and modifications (waveshaping) are possible. The changes range from simple hard- or soft-clipping, to completely changed waveforms, in which the original input signal can no longer be recognised.

Positive component of the signal with adjustable clipping threshold (also externally); and gain / roll-off (+/-)
Negative component of the signal with adjustable clipping threshold (also externally); and gain / roll-off (+/-)
Original signal with adjustable gain / roll-off (+/-)
Inputs: Audio / CV In, ext. Clipping Level (+), ext. Clipping Level (-)
Outputs: Audio / CV Out
Application examples: Audio distortion (can get especially interesting in conjunction with filters), waveform manipulation for audio- and control signals (LFO, ADSR, random, etc.).
Width: 8 HP
Depth: 45 mm
Power requirement: +30 mA (+12V) / -10mA (-12V)

30-Day Money-Back Guarantee

3-Year Thomann Warranty

Available since April 2004

Item number 169616

Sales Unit 1 piece(s)

Width 8 TE / HP

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Expected between Tue., 8.04. and Wed., 9.04.

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in Waveshaper, Distortion Modules

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Doepfer A-137-1 Wave Multiplier I

33 Customer ratings

5 23 Customers 4 8 Customers 3 2 Customers 2 0 Customers 1 0 Customers

4.6 / 5

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sound

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19 Reviews

Capable Waveshaping

Martyn Q. 29.09.2015

As with all Doepfer products, the a136 is powerful, inexpensive and logically laid out. It requires careful gainstaging to coax the best performance from it so be warned you'll be spending some time initially finding the sweet spots - but they are there, rest assured. I often use the a136 on my stand alone synths also, as well as my eurorack only sound design, with great results. Just remember your gainstaging and you'll love it.

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It need some practice

Wildthing 29.06.2020

It's a really good hard clipper and it works well as a waveshaper. However it takes a bit of time to understand how to get the most out of it. I'm still learning....

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Less Distortion, More Added Beef

LiamJ 10.10.2015

I found this to add less distortion and more of a general fuzz/amp module giving the sound a bit louder/thicker sound than the perceived distortion that you would achieve, but as always, great build quality and a lovely module to add to the collection, great for beefing up bass lines created on a modular.

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HAHA Kick goes bzzzt

Mexl 12.02.2025

Put any Kick through it, turn the BPM to 211 and go absolutely Nuts, like its the Netherlands 25 years ago...
I love it.
You can also use it in a more sensible way, to create a plethora of weird and wacky waveforms from any ol' vanilla VCO.
Or just obliterate anything to a square.

I saw some other reviews stating you'd have to study electronics on MIT to understand how this thing works, but i have to disagree: you probably need some time and research to wrap your head around the concept but its not rocket science (or FM-synthesis)

11 out of 10 me recommend the Doepfer A-136