Dreadbox Announces ‘Super Fat & Creamy’ Murmux Adept 8-voice Polyphonic Synthesizer

Dreadbox reinvents the Murmux analogue synth in a limited-edition 8-voice version called Adept.

Updated with built-in effects and increased polyphony, Murmux Adept retains the retro tweed finish of its younger brother.

Ahead of Superbooth 2024, being held in Berlin May 16-18, Dreadbox has announced the release of Murmux Adept, a limited-edition 8-voice polyphonic synthesizer of its Murmux analog synth, first launched in 2014, and it’s a rather beastly 5kg unit clad in tweed with pleasingly retro wooden panels.

Murmux Adept bumps up the specs of its predecessors significantly, offering 8-voice polyphony through two analogue VCOs capable of continuous waveshaping, oscillator sync, detuning and PWM.

The oscillators run through an analogue filter section with 24dB/oct low-pass and 6dB/oct high-pass filters, along with filter FM and a 6dB/oct low frequency booster to give your bass-heavy patches some heft.

The synth’s modulation section offers you two ADSR envelope generators to be shaped with handy sliders, a global LFO and a polyphonic LFO that modulates each of the synth’s voices independently.

In addition, Murmux Adept arrives with built-in effects, including a versatile analogue BBD chorus that can also apply flanger and comb filtering, and a digital stereo delay.

As for connectivity, on the back panel you’ll find MIDI in/out and a USB connection alongside a headphone out and stereo out.

What they say about it:

“In the MURMUX Adept edition, we’ve included ground-breaking capabilities, which combine the warmth and richness of vintage analog sound with cutting-edge features, delivering unparalleled sonic possibilities to musicians and producers.

This is the 3rd and final version – the epilogue of the Murmux series, the synthesizer that started all for dreadbox.”


  • Full Analog 8-Voice Synthesis
  • Smart Mixer/Oscillator Design Section
  • 24dB/Octave Resonant Low Pass Filter
  • 6dB/Octave High Pass Filter
  • 6dB/Octave Low-Frequency Booster
  • 2 Envelope Generators
  • 9 LFOs (1 per Voice + 1 Global)
  • Analog Stereo BBD Chorus/Flanger/Comb Filter
  • Nostalgic Hybrid Stereo Delay (Up to 1 Second)
  • Stereo Spread System
  • “Super Fat, Creamy” Murmux Engine
  • One Knob/Function Control
  • Smart Global LFO
  • 150 Factory Presets
  • 249 User Preset Slots
  • Handmade Wooden Enclosure

 The Dreadbox Murmux Adept available now for € 2699, is a limited-edition synth and only 300 units will be made. Find out more on Dreadbox website.

Watch a demo from Andertons below:


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