Cwejman VCO-2RM Oscillator


Two identic very warm and fat oscillators which remind us of the Oberheim Xpander. When compared to a Minimoog Voyager (with filter fully open) we and Vladislav Delay could hear NO difference between Moog and Cwejman! The internal pre-patched frequency modulation is also very nice, just turn the control and enjoy the brilliant sound without patching... One of our best sellers.

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 circuit is identical to the first VCO of the Cwejman S1 so you can use the module as an LFO, too. Additionally there´s a pre-patched hi-quality ring modulator which you can also use with externals signals of course. Each VCO has a positive and inverted output which provides only one waveform at the same time but 7 different waveforms are available, three of which (!) feature pulse width modulation.<7p>

Hint: Set both VCOs to pulse or „mixed-pulse“ and make only the 2nd VCO audible. Then slowly turn up the FM-Level control on VCO2 and play with the PWM controls... that´s fun. Depending on the setting of frequencies or intervals very expressive sounds can occur.
It features user selectable internal pitch-CV connection via the buss.
Generally all Cwejman modules are shielded from interferences and contain lots of calibration possibilities on the backside, see picture.


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.)


Audio-In: 2 x 3,5mm jack (Ringmodulator-In)
Audio-Out: 5 x 3,5mm jack
CV-In: 10 x 3,5mm jack (see big picture).


3U Eurorack module, 20HP wide, 40mm deep
power consumption: 75mA

0.52 kg
Article Number
This product cannot be reserved. Please use the email notification.
€ 19% VAT excl. €570.59 € 19% VAT incl. €679.00
Excl. 19% VAT, Excl. shippingLieferzeit 1