by Robin Vincent | Approximate reading time: 1 Minute
4MS Percussion Interface

4MS Percussion Interface  ·  Source: 4MS


The Ensemble Oscillator we saw at NAMM is now ready to go but they have an intriguing Percussion interface that works with external sound through a contact mic to generate CV.


Percussion Interface

It’s designed to track percussion live from a microphone or recorded. It comes with an Expander module that has a 1/4 inch input for a microphone or you can use a regular patch socket input for other sources. Using something like a contact mic you can start tapping things and banging things that can generate a response in the module.

That response is generally an envelope over which you have control of Sustain and Decay – the attack is set by the sound itself coupled with the Sensitivity knob. There’s also a Follow mode that captures and uses the incoming audio to form the envelope. You can switch between low/medium/high input levels for using modular, line and mic type of gain.

The Expander also has a loop through for the audio, attenuators and inverted envelope output which is useful for ducking.


It’s quite a cool thing for adding some live percussive finger tapping or audio following to your rack and it should be available for under $100 for both the Percussion Interface and Expander modules (not sold separately).

They also have some new versions of their Row Power Eurorack power supplies. Starting with the Row Power 25 (up to +1A) at $99, Row Power 35 (up to +1.4A) at $145 and Row Power 45 (+- 1.4A) and this is the new flagship module. It has an optional Bluetooth power monitoring daughterboard for $50 so you can monitor the power usage on your phone – nice!

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4MS Percussion Interface

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