£79.00 (£65.83 ex VAT)

Four Channel DC-Coupled Mixer, with Normal & Inverted Output

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SKU: mx1 Categories: ,


The Future Sound Systems MX1 mixer module from FSS is designed to present a compact, affordable mixing solution for Eurorack users.

The MX1 gives four audio inputs in as many HP, with both normal and phase-inverted outputs available. The level controls of the MX1 are logarithmic, but the channels are DC coupled, so CVs can be summed together using the MX1 if necessary.

The MX1 provides unity gain of each channel when the level control is fully clockwise, meaning that there is no loss of signal level when mixing. This also allows for the MX1 to be overdriven, especially if the same source is multipled to the four inputs or the “normal” output is fed back into one of the inputs.

A set of expansion headers also allow for the FSS P.O.C.A. VAC1 and Whitehall SW1 modules to be used alongside the MX1 without any patching required, when using the optional MX1x expander accessory (sold separately).


  • Four channel mixing in 4HP
  • Logarithmic level controls for audio input level scaling
  • DC coupled channels allow for CV summing
  • Normal and phase-inverted outputs
  • Unity gain summing allows for overdrive effects
  • Expander board and cable available for normalling from FSS VAC1 and SW1 modules (sold separately)
  • Reverse power protection
  • 2mm thick fibreglass panel
  • Hand assembled and tested by Finlay Shakespeare at FSS HQ in Bristol

Width: 4hp
Depth: 39mm (with MX1x attached)
Power: 15mA @ +12V @ / 15mA @ -12V