Toppobrillo - Stereomix


Clean stereo mixer with four full-fledged channels, each with a pre/post selectable aux send, popless mute/solo as well as voltage control of panorama, level and aux send amount.
The module has a loud headphone output which emits either a monitor mix or a cue mix with a wide range of applications. The aux return is stereo and has level control; the panorama circuitry has a compensated "constant power" law.



  • 4 fully-featured input channels, with voltage control over LEVEL, PAN position and AUX SEND level.
  • Pop-Free Muting | Cueing | Soloing. (long press on the LED Mute Switch enables SOLO for selected channel).
  • -3dB compensated "constant power" pan law.
  • Stereo Aux Return with level control. ("L/Mono" return normalized to "R" return for Mono if "R" is unpatched). Extra gain available for outboard effects.
  • "Cue Mix" output available for use as pre-listen, a second FX send channel, alternate mix, etc...
  • AUX send can be switched to PRE or POST fader for each of the four channels. -10dB pad available for aux send via jumper.
  • Loud and super clean stereo headphone driver allows monitoring of either "Main Mix" or "Cue Mix" which allows for previewing input sources before adding them to the Main Mix. This can also be used to link to line level TRS outboard recording/processing devices, stereo send, etc... Independent level control of both headphone and main mix.
  • Master volume control and dual 5-segment VU metering.
  • Efficient design. Relatively low power consumption and very low-noise/ low distortion audio path. Audio AC coupled through low-distortion "audio grade" film capacitors and a very low-noise opamp.

Revision 1.1, which is now available, offers improved LED response and the pan law is closer to the ideal. Furthermore, the HP amp is even louder than before. The most noticable thing, however, is a new channel expansion header on the circuit board.


per channel: audio input, pan CV input, level CV input, aux send CV input

aux Return: left (mono), right
outputs: cue mix, aux send, left output, right output, headphone output


3U Eurorack module, 24HP wide, ~35mm deep
average current draw: 200mA at +12V and 120mA at -12V

0.22 kg
Article Number
Status: The article can be picked up in the shop right now / article is ready for dispatch
availability ? immediately available
€ 19% VAT excl. €461.34 € 19% VAT incl. €549.00
Excl. 19% VAT, Excl. shippingLieferzeit 1 Tag