The PWM Malevolent is a dual-oscillator, semi-modular analog synthesizer that represents the debut instrument from Paul Whittington's new company PWM (Paul Whittington Group Limited). Developed in collaboration with Bristol-based Future Sound Systems, the Malevolent builds upon the foundation of the Brunswick single-oscillator synthesizer kit, expanding it into a comprehensive sound design tool.

This purely analog yet digitally controlled synthesizer features a gritty character with substantial patching capabilities, making it comparable to instruments like the Moog Grandmother in terms of workflow and integration potential. The Malevolent adopts a modern approach to analog synthesis, combining traditional East Coast synthesis architecture with extensive modulation possibilities and contemporary connectivity options.

The instrument presents itself as "a gateway drug into modular" synthesis, featuring 38 patch points (19 inputs and 19 outputs) that integrate seamlessly into Eurorack systems. At approximately 104HP wide, it fits perfectly at the bottom of a modular setup while functioning as a complete standalone synthesizer.

The front panel workflow follows a logical left-to-right signal flow: keyboard section with arpeggiator, LFO, dual oscillators, envelopes, mixer with noise generator, multi-mode filter, VCA with drive circuit, and main output. This layout prioritizes accessibility and intuitive operation while maintaining the flexibility for complex patching scenarios.

Notable features include cross-modulation capabilities between oscillators, a capable opto-FET-controlled 2-pole Sallen-Key filter with multiple modes, and an innovative multi-function joystick control system. The built-in keyboard provides velocity-sensitive control with sophisticated arpeggiator functions, while the digital control section offers USB-MIDI to CV conversion capabilities.

The Malevolent excels in FM synthesis applications, with dual FM inputs per oscillator enabling complex metallic and bell-like tones. The integrated drive circuit works particularly well with the filter at high resonance settings, creating characterful distortion and overdrive effects. A drone mode allows for sustained operation while emphasizing modulation-based movement.

Technical Specifications

Core Architecture

• Type: Semi-modular analog synthesizer
• Voice Architecture: Monophonic with dual oscillators
• Signal Path: Pure analog audio path with digital control
• Patch Points: 38 total (19 inputs, 19 outputs) using 3.5mm mono jacks
• Normalization: Pre-patched signal routing for immediate operation
• Compatibility: Eurorack standard 1V/Oct gear compatible

Oscillators

• Count: 2 identical voltage-controlled oscillators (VCOs)
• Waveforms: Saw, Triangle, Pulse (all shape-variable)
• Outputs: Individual waveform outputs plus mixed output per oscillator
• Pitch Control: 1V/Oct standard with coarse/fine tuning
• Modulation Inputs:
  • Shape/Pulse Width Modulation input per oscillator
  • 2x Frequency Modulation inputs per oscillator
  • Individual mod amount controls for FM1 and FM2
  • Shape mod amount control
• Controls: Individual oscillator level control, selectable waveforms for mix output

Filter Section

• Type: Multi-mode 2-pole Sallen-Key VCF (Voltage Controlled Filter)
• Modes: Low Pass, Band Pass, High Pass (individual inputs)
• Control: Opto-FET controlled
• Modulation: 2x Frequency Modulation inputs with amount controls
• Parameters: Cutoff frequency, Resonance

Envelopes

• Count: 2 independent ADSR envelopes
• Controls: Individual Attack, Decay, Sustain, Release per envelope
• Inputs: Individual gate inputs per envelope
• Outputs: Individual envelope outputs

LFO

• Waveforms: Triangle, Square wave outputs
• Control: Rate control
• Normalization: Multiple destinations pre-patched

Mixer Section

• Noise Generator: With level control
• Auxiliary Input: With level control
• Integration: Feeds into main signal path

VCA & Drive

• Type: Voltage Controlled Amplifier with integrated overdrive
• Drive Control: Overdrive/distortion amount
• AM Input: Amplitude modulation capability

Keyboard & Control

• Keys: 32 velocity-sensitive mini-keys
• Octave Range: +/- 4 octaves shift
• Outputs: Pitch CV, Velocity CV, Gate CV
• Local Control: Local Off mode for DAW integration

Multi-Function Joystick

• Pitch Bend: Left/right movement
• Portamento: Push up for variable glide speed
• Vibrato: Push up when vibrato mode active
• Hold Function: Flick down for note latching
• Modes: Latching and momentary hold options

Arpeggiator

• Patterns: 6 types (Up, Down, Up/Down 1, Up/Down 2, Played, Random)
• Clock Sync: Auto-detection of analog/MIDI/USB-MIDI clock
• Sync Rates: Selectable when clock detected
• Range: 6 octave span
• Latch: Hold arpeggio function
• Clock Output: Generates clock when running

Special Features

• Drone Mode: Sustain switch for continuous operation
• Cross-Modulation: Oscillator-to-oscillator FM capabilities
• Eurorack Integration: Perfect fit for modular systems at ~104HP width
• Digital Control Benefits: Precise parameter control with analog sound
• Patch Point Layout: Inputs at bottom, outputs at top for organized patching

Connectivity

• USB: USB-C port for MIDI and bus power
• MIDI: MIDI In/Out (5-pin DIN)
• Clock: 3.5mm analog clock in/out
• Audio Outputs:
  • 1/4" headphone output
  • 1/4" line output (rear panel)
  • Multiple 3.5mm patch outputs
• CV/Gate: Full USB-MIDI to 1V/Oct CV conversion

Power Requirements

• USB Bus Powered: Can run from USB power alone
• External Power: 9V 600mA adapter (included)
• Power Consumption: Low power consumption design

Physical Specifications

• Dimensions (Unboxed): 490 x 250 x 80 mm
• Weight (Unboxed): 2.61 kg
• Dimensions (Boxed): 690 x 320 x 160 mm
• Weight (Boxed): 3.70 kg
• Build Quality: Solid construction with smooth, weighted controls
• Side Panels: Magnetic removable panels

Factory Included Accessories

• 5 patch cables (3.5mm)
• 9V 600mA power supply
• USB-C cable
• Getting Started Guide