WMDevices Sequential Switch Matrix EXP

Expanded functionality of the Sequential Switch Matrix
MFR# Sequential Switch Mtx EXP
WMDevices Sequential Switch Matrix EXP
No interest if paid in full within 12 months Learn more
Special Order
Note: This item may not be returnable or could require a restocking fee. Contact one of our Audio Consultants for more details. Due to the special nature of this item, we order each unit fresh from the factory, exclusively for you! Lead times may vary so please chat, call or email for up-to-date inventory status.

The WMDevices Sequential Switch Matrix Expand 8 HP module provides extended functionality of the Sequential Switch Matrix.


  • Gate/Trig: Gate (Green LED lit) provides 10 V outputs for each routing button. It mirrors the routing shown by the SSM LEDs. Trig mode (Red LED lit) will output a trigger when a step (CV, Step/Gate or Reset) is taken. Pushing a routing button will not change the output thus providing synchronized triggers.
  • Trigger Length: CV and knob provide adjustable trigger length.
  • Retrig on Step: When on, gates and triggers will retrigger quickly when a step is taken.
  • Invert Behavior: When on, routings that are OFF will produce ON triggers or Gates.
  • DAC3/4: Two 4 bit DAC outputs that output a weighted 4 bit voltage between 0 and 5 volts. From routing columns 3 and 4.
  • Step: Outputs a trigger for each step, reset or CV change that is made to the SSM.
  • Installation: Connect the 20 pin ribbon cable to the GTExp header on the SSM, and the ToSSM connector on the Expand. Red Stripe Down.
  • Specs: 8 HP. 25 mm Depth. 10 V Gate Outputs. Current consumption is +40 mA, -3 mA. 12 month warranty.


  • Width: SSM 16 HP. Expand 8 HP.
  • Current consumption: SSM +80 mA/-32 mA. Expand +40 ma/-3 mA.
  • Voltage Levels: Input range +-10 V. Output range +-10V. Step/Gate and Reset sense signals at 0.8 V.
  • Operating Frequency: Maximum transition frequency is 26kHz. Pushing buttons at high
  • clock speeds will slow the response as the buttons are debounced.
  • Compare Input: ±10 V. Normaled to 0.5 V.
  • Depth: SSM & Expand - 25 mm with connectors
  • Compliance: The SSM and Expand are RoHS and CE compliant.


  • Gate/Trigger Outputs of Each Route
  • Gates Mirror Routing LEDs
  • Triggers Occur on Steps
  • Step Output For CV and Step/Reset
  • Retrigger Gates on Step Optional
  • Gate/Trig Behavior Invertable
  • CV and Knob for Trigger Length
  • Four Bit DAC Outputs for Outs 3/4
  • Skiffable PCB Design
  • 8 HP
  • +40 mA/-3 mA Current Consumption

Additional Information

Condition New
Maximum Depth 25 mm
Chassis Module
Module Type Eurorack
Module Slot Count 8hp
Connector Type 3.5mm
Power Consumption +40 mA/-3 mA
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