Polyend Dreadbox Medusa Hybrid Synthesizer w/ PSU + Quick Start Guide
Polyend Dreadbox Medusa Hybrid Synthesizer w/ PSU + Quick Start Guide
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For sale: Polyend Dreadbox Medusa hybrid synthesizer in very good cosmetic condition and perfect working order. This is a genuinely strange and unique creature that combines a hybrid analog & digital synth engine, expressive grid controller, and deep sequencer in one distinctive piece of hardware with an intuitive interface that rewards exploration.
Details below:
The OSC1 potentiometer was drifting. We replaced with a new part and it's now working perfectly.
The firmware has been updated to the latest version 4.0.1.
Everything works as it should with no known issues.
The overall cosmetic condition is very good, but there are a few blemishes in the finish (see photos 14-17), and a few imperfections on the knobs (see photo 18). Please examine all photos carefully, as we have done our best to document the condition.
The Medusa was developed jointly by Polyend and Dreadbox, pairing three analog oscillators and three digital oscillators with an analog multimode filter and a highly expressive 8x8 Grid. It can operate as a massive six-oscillator monosynth, a paraphonic instrument, an experimental sequencing platform, or an expressive controller for external MIDI gear. Firmware 4.0.1 also adds a six-voice, three-operator digital FM synth engine.
Sale includes the Polyend Dreadbox Medusa, power supply, and quick start guide.
- Guaranteed as described or your money-back.
- 15-day return window. See return details.
- Questions? Email or chat with us anytime.
No sales tax collected on orders outside Texas. A signature is required for delivery. We ship via UPS, FedEx, and USPS. Email us before or after checkout if you have a preference.
We accept 15-day standard returns. We take great care to ensure your items arrive as described. See our Refund Policy and Shipping Policy for more details.
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We strive for accuracy, but errors can occur. Please verify details or contact us with questions.
- Instrument Type: Desktop hybrid analog/digital synthesizer, expressive controller, and hardware sequencer developed jointly by Polyend and Dreadbox
- Voice Architecture: Six-oscillator architecture with monophonic and paraphonic play modes
- Six oscillators combined into one monophonic voice
- Three paraphonic voices using two oscillators per note
- Six paraphonic voices using one oscillator per note
- Oscillators:
- Three analog oscillators with multiple classic waveforms
- Three digital oscillators with conventional waveforms and wavetable synthesis
- Analog noise generator with adjustable color
- Firmware: Updated to version 4.0.1, which adds a six-voice, three-operator digital FM synth engine
- Filter: Dreadbox-designed analog multimode filter with 2-pole low-pass, 4-pole low-pass, and 1-pole high-pass modes
- Modulation: Five envelopes and five LFOs with extensive routing across the synthesis engine
- Grid Controller: 8x8 matrix of 64 expressive pads supporting positional and pressure-based modulation
- Sequencer: 64-step sequencer with step, live, and incremental recording modes
- Parameter Locking: Extensive per-step parameter automation allows sequences to reshape the sound as they play
- Program Memory: Stores up to 128 programs containing both sound and sequence information
- External Control: The Grid can operate as a configurable MIDI controller and transmit MPE data to compatible external instruments
- External Audio: Audio input allows external signals to be processed through the Medusa's synthesis engine and analog filter
- Connectivity:
- Monophonic audio input and output
- Headphone output
- MIDI In, Out, and Thru
- USB connection for MIDI and firmware management
- External 15V DC power supply
- Workflow: Designed for hybrid sound design, expressive performance, evolving parameter-locked sequences, and control of external MIDI hardware

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Questions? Offers? Let's Talk Synths.
Email or chat with us anytime. We've restored and sold hundreds of synths. Whether you need buying advice, details on this unit, or have other questions, we're happy to help. If you need repair advice or help sourcing parts for your own unit, please create a ticket.
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