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YuSynth 8-Step Sequential Router Module Bare PCB

(£20.62 UK, incl VAT)
26 g
In stock

This module was designed in order to create complex and intricated sequences out of three basic sequences provided by one or more external sequencers.
As a matter of fact, it is a kind of sequential (maximum six steps) multiplexer that makes it possible to route three analogue inputs to two different outputs.
For each step, a rotary switch offers nine possible routes (number sare for inputs and letters for outputs, A2-B1 reads  output A receives input 2 and output B recives input 1) : A1-B1, A1-B2, A1-B3, A2-B1, A2-B2, A2-B3, A3-B1, A3-B2 and A3-B3. For the STEPs #2 to #6 the first position of the rotaries is the sequence RESET function.
Strictly speaking this offers more than 531.441 possible combinations !
The steps are shifted either using a push button or by an external GATE signal. The routing sequence is reset to start position using a RESET push button or by an external signal. Yellow LEDs indicate which STEP is active.

Note that it can be used also for sequencing-multiplexing three audio sources to two audio channels !

NOTE : Yves at YuSynth limited the circuit to 6 steps because of a 2U panel was too small for 8 rotary switches and jacks. However, the same PCB and components can be used to extend it to 8 steps. Read the notes on the schematics and see the different component layout versions. The Soundtronics components kit includes parts for the 8 step version to match our own front panel.

We all have our preferences when it comes to building our modular synth so we offer a range of products for the build:

  • PCB, size 75 x 100mm
  • Individual components
  • Kit of parts (excluding PCB, knobs and connectors)
  • Knobs (Cliff KM20B)
  • Jack sockets
  • Power connectors
  • Front Panel
  • Back Panel
  • PCB Holder
  • PCB Holder Brackets
  • Panel PCBs
  • Wiring Leads

For the latest build information, we recommend visiting the YuSynth website at

However, we also include this build information in our product pages plus additional details relating to the complete module assembly using our front panel solution as they are developed.

Do you have the size of the Seq. Router PCB and the size of the PCB holder (7220-901)? Thanks

Asked by Jeremy | 18/07/2021, 04:08 | 1 answer(s)

Hi, I've just started putting together a panel wiring diagram and a little confused by the PCB markings showing as CLK,GND,RST,PUSH. would I be right in saying that CLK =Shift In, i.e a clock pulse via the jack, GND is a shift using the shift button, RST is a reset using the button and PUSH is a pulse from the Reset In jack

Asked by Anthony William Box | 08/03/2021, 11:45 | 1 answer(s)

Paul, I'm having trouble working out the front panel wiring to the PCB for the 8 Step. Yves doesn't have any information or helpful diagrams. The issue is with all the wire from the six rotary pots all 65 of them. Am I missing something obvious here? Thanks Bob

Asked by bob breeks | 05/08/2019, 07:48 | 1 answer(s)

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