We stand for our product with our hearts and passion.

Varia Instruments
Best quality and durability is our first priority. Our philosophy - the reduction to the essentials - is reflected in our unique rotary DJ mixer handcrafted in Switzerland.
We - Marcel & Simon, a team of two young Swiss technicians and music lovers - care about our device.


The RDM20 is a fully analog two channel rotary DJ mixer, with one phono and two line inputs on each channel. For your mixing pleasure we've developed two different three band isolator-banks and built them into the RDM20. One is set on the master and there's another one on each channel. While the master isolator is quite steep and raw, the character of the channel isolator is more soft and smooth. You can totally release your creativity with the combination of those two isolators and it's big fun to mess around with these knobs - believe us!
The RDM20 has two balanced outputs (House XLR, Booth Jack), as well as a separate steady recording output (cinch). The power supply unit is built in, no extra mains adapter needed. Analog VU-meters are indicating the level of the master.

balanced house and
booth outputs.
one phono plus two line inputs per channel.

Phono: RCA 47kΩ | RIAA response +1/-0.5dB
Line: RCA 68kΩ | 20Hz-20kHz +-0.5dB
House: XLR Balanced 100Ω | +4dBu nominal
Booth: Jack Balanced 100Ω | +4dBu nominal
Rec Out: RCA Unbalanced 100Ω | -10dBV nominal
Phones: 1W into 70Ω

three band isolator
per channel plus
three band isolator
on the master.

Slope 12db/oct
20-125Hz | 125-4'000Hz | 4'000-20'000Hz
Cut -inf dB, Boost +9dB
Slope 24db/oct
20-280Hz | 280-4'200Hz | 4'200-20'000Hz
Cut -inf dB, Boost +9dB

industrial powder
coated housing with sub-eloxal printed aluminium faceplates.

300 x 235 x 152 mm (11.81 x 9.25 x 5.98 inches)

3.5 kg (7.7 lbs) with built in power supply


Official retail price: 2'190 CHF excl. delivery

To order your RDM20, just drop us a line below and we will get back to you and send you all further necessary information.
We request a deposit of 500 CHF to confirm your order. When your unit is fully built and tested, the remaining amount is payable.
We will ship your RDM20 as soon as we have received your money. We do accept bank transfer payments or PayPal*.

Please note that it will take 12-16 weeks to build your RDM20, depending on the amount of orders we're dealing with.

*An additional fee of up to 6% of the invoice total might be charged if using PayPal.


Varia Instruments GmbH
Holzikofenweg 1
CH-3007 Bern
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