FSS – Brunswick Synthesizer PCB

£37.50 (Excl. VAT)

Affordable semi-modular synth voice featuring 24-point patch-bay

This is a PCB Only – for a Full Kit go here

In stock




The Brunswick is perfect for those who want an introduction into the world of patchable analogue synthesis!

The Brunswick Synthesizer from Future Sound Systems is a newly designed, affordable synth voice with plenty of connectivity for exploration and integration with other devices. The Brunswick features a single VCO (Pulse & Sawtooth), multi-mode two-pole VCF and a character filled onboard VCA. The synthesizer also features it’s own internal LFO and envelope sections alongside FM inputs for the VCO and VCF. The Brunswick features a 24-point patchbay that allows for external voltage control over VCO pitch (v/oct) and envelope gate, as well as a slew of other inputs and outputs on 3.5mm mono jacks (see below for full list).



  • Full Synthesizer Voice
  • Pulse/Sawtooth VCO
  • VCO PWM & FM
  • 2-Pole VCF with FM
  • Internal Triangle & Square wave LFOs
  • Internal Envelope & VCA
  • PLL & Phase Comparator
  • 24 point Patch bay
  • Power: 2x PP3 9V batteries (+35, -20mA current draw)
  • Batteries not included
  • Dimensions: 194 x 120 mm

Patch bay I/O:

  • VCO 1V/Octave pitch control input
  • VCO PulseWidth Modulation input (normalled to LFO Triangle output)
  • VCO FM 1 input (normalled to LFO Triangle output)
  • VCO FM 2 input (normalled to Envelope output)
  • VCO “Sawtooth” output
  • VCO Pulse output
  • Phase Comparator input
  • Phase Comparator output
  • Phase Locked Loop input
  • Phase Locked Loop output
  • LFO Triangle output
  • LFO Square output
  • Low-Pass Filter input (normalled to switched VCO output)
  • Band-Pass Filter input
  • High-Pass Filter input
  • VCF output
  • VCF FM 1 input (normalled to LFO Triangle output)
  • VCF FM 2 input (normalled to Envelope output)
  • VCA input
  • VCA output
  • VCA AM 1 input (normalled to LFO Triangle output)
  • VCA AM 2 input (normalled to Envelope output)
  • Envelope Gate input (normalled to LFO Square output)
  • Envelope output

Build Document


User Manual

Brunswick Flow Diagram

Muffwiggler Build Thread 

Additional information

Weight 0.079 kg