Cwejman ATT-4 Attenuator


The ATT-4 is a fourfold attenuator with switchable offset. Its primary task is the attenuation of modulations in case CV inputs don't have their own attenuators. If set to to bipolar mode audio signals can also be attenuated.

We currently do not accept pre-orders for Cwejman products. If you are interested in this module, please use the availability notification. The number of Cwejman circuits is limited. Therefore, we recommend you to order online IMMEDIATELY when a module becomes available. Enquiries via e-mail or telephone are usually not fast enough. (More detailed information can be found on the product page.)



The module consists of four identical units which feature one inupt, one output and a level potentiometer. The offset- or BIAS-switch converts bi-polar signals like audio signals or LFO signals which reach from -2.5V to +2.5V (5V amplitude) in unipolar signals from 0-5V.

All Cwejman modules are screened against interferences, protected against reverse polarity and contain calibration options on the backside. (See photograph.)

Attention: Unlike other manufacturers, the red stripe of Cwejman's flat ribbon cable indicates the positive +12 V rail, not the negative one!


We currently do not accept pre-orders for Cwejman modules. For some products, there are waiting lists with pre-orders from the years 2013 to 2017, which are being processed as a matter of priority.
If you’d like to be informed as soon as this module is back in stock, please activate the availability notification via e-mail.
Please note: The number of Cwejman modules is always limited and much lower than the number of interested parties. Therefore, we recommend to order IMMEDIATELY and ONLINE if a Cwejman product becomes available. Enquiries via e-mail or telephone are usually not fast enough.
If the demand is higher than the supply, unfulfillable pre-orders will be deleted. In this case you’ll receive an e-mail. (Pre-orders on the waiting lists mentioned above are excluded from this policy.)


4 inputs, 4 outputs


3U Eurorack module, 10HP wide, 25mm deep
power consumption: 20mA

0.35 kg
Article Number
External Links

This item is discontinued or sold out and no longer available, please feel free to look for comparable new stuff in the following categories.