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CPM DS-2 Analog Drone Synthesizer
Versatile modulation with dual LFO outputs
The DS-2 includes a powerful LFO system with two independent waveform outputs, each selectable from 14 options. These range from classic triangle and square waves to more complex exponential and pattern-based shapes. The LFO frequency spans from 0.02 Hz to 70 Hz, with CV control extending it even further.
Each LFO output can be routed independently to different destinations, such as oscillator pitch, filter cutoff, or waveform shape. A trigger input allows for precise LFO reset, making it easy to sync modulation effects with external gear.
Dual oscillators with smooth waveform blending
The DS-2 features two analog oscillators, each based on the AS3340 chip for stable tuning and a wide frequency range. Each oscillator provides triangle, saw, and pulse waveforms, with the ability to smoothly blend between them using the X-Wave control. This allows for unique waveform shaping and dynamic timbral shifts.
A sub-oscillator extends the sonic possibilities further, with options to shift one or two octaves below the main oscillator. The two oscillators can function independently or be linked with pitch sync and hard sync controls, enabling phase-locked and harmonically rich tones.
State-variable filter with dynamic modulation
The DS-2 includes an analog filter based on the AS3320 chip, featuring a 12dB per octave roll-off and switchable low-pass and high-pass modes. The resonance control allows the filter to self-oscillate, generating additional harmonic content or acting as a sine wave oscillator at high settings.
LFO depth controls allow for dynamic modulation of the filter cutoff, creating evolving textures and rhythmic sweeps. The filter’s frequency range extends from 15 Hz to 12 kHz, making it effective for shaping both deep bass drones and bright, resonant tones.
Built-in delay and reverb for added depth
The DS-2 includes onboard delay and reverb effects, adding depth and movement to the sound. The delay, based on the PT2399 chip, provides warm, vintage-style echoes with a time range of 70 ms to 450 ms. At extreme settings, it can self-oscillate, producing feedback-driven textures.
The digital reverb section, powered by the AL3201 effects chip, features eight algorithms, including room, plate, and hall settings. The reverb can be switched between mono and stereo, allowing for wide spatial effects or more focused, classic reverb tones. Separate dry/wet controls for both delay and reverb enable precise blending with the raw analog signal.
Standalone design with Eurorack connectivity
The DS-2 functions as both a desktop synthesizer and a Eurorack module. It can be powered via a 12V DC adapter, six AA batteries, or directly from a Eurorack power supply. The battery compartment is located on the underside of the unit, making it easy to switch between portable and studio use.
With extensive CV patch points, including inputs for pitch control, pulse width modulation, and filter cutoff, the DS-2 integrates seamlessly with other modular and semi-modular gear. The ability to route external audio through the effects section adds further versatility, allowing users to process external synths or drum machines through the DS-2’s delay and reverb.
CPM DF-8 Modular Analog Multi-Mode Filter
Filters that encourage detailed exploration
The DF-8 houses two filter channels, each built to cover a broad range of tones. The 2045 circuit maintains a calm and rounded response that works well for controlled lowpass shaping. The GEN R 8 circuit offers a more spirited voice that feels lively when resonance is pushed.
Each channel includes lowpass, bandpass, highpass and notch modes plus three additional combination types that create extended responses for broader sculpting. This range makes it simple to form subtle shifts or bold peaks, and both filters react accurately to modulation so crafted movements remain clear within a mix.
Envelope control that adapts to many setups
Two ADSR envelopes sit at the centre of the modulation system. Each can be triggered by a gate input, by incoming audio, by a manual button or by an auto repeat mode that loops the envelope continuously. When looping is active the envelope behaves like an LFO and can create rhythmic pulses or slow evolving patterns that follow the attack and release curves.
Both linear and exponential responses help shape the timing to match the character of a patch. Envelope signals can drive filters or VCAs which supports more voice like behaviour inside a compact enclosure, and this helps the DF-8 act as both a processor and a sound source.
Creative tools for unpredictable textures
Two white noise sources introduce grain, air or percussive bite. These can be mixed in gently or pushed for heavier textures. Sample and hold with adjustable slew creates stepped or smoothed random movement suited to evolving lines.
The PT2399 delay adds a vintage style crunch that pairs well with modulated filters and rhythmic sequences. Short repeats can create sharp accents while longer repeats can smear tones into atmospheric pads. Each element encourages open ended experimentation, and the combination of noise, modulation and delay makes it simple to build patches that feel alive.
Portable format built for flexible expansion
Power options include AA batteries, an external supply or a Eurorack connector, which keeps the DF-8 adaptable across different environments. A built-in speaker allows quick monitoring, and stereo outputs suit headphones or line level destinations. The enclosure features ribbed sides that allow multiple CPM units to lock together to form a larger system without extra stands or brackets.
Additional CPM units can create a compact modular environment suited to live sets, studio sessions or mobile sound design, and the DF-8 integrates naturally into these setups thanks to its clear layout and varied patch points.
Features
CPM DS-2 Analog Drone Synthesizer
- CV input for precise LFO rate control
- Trigger input for rhythmic LFO reset and synchronization
- Dual analog oscillators with smooth waveform blending
- State-variable analog filter with low-pass and high-pass modes
- Self-oscillating resonance for additional harmonic shaping
- Built-in delay with vintage-style echoes and self-oscillation
- Digital reverb with eight selectable algorithms
- Extensive CV patch points for modular integration
- Standalone operation or Eurorack compatibility
- Multiple power options: 12V DC, six AA batteries, or Eurorack power
- External audio input for processing through delay and reverb
- Compact and portable design for studio and live performance
CPM DF-8 Modular Analog Multi-Mode Filter
- Dual analog filter circuits with distinct tonal characteristics: smooth 2045 and bold GEN R 8
- Each filter offers lowpass, bandpass, highpass, notch, and three combination modes
- Two ADSR envelopes with gate, audio, manual, and looping triggers for versatile modulation
- Looping mode transforms envelopes into LFOs for rhythmic or evolving patterns
- Dual white noise generators add texture for percussion, atmosphere, or signal blending
- Sample and hold circuit with adjustable slew enables random modulation and smooth motion
- PT2399 delay delivers gritty, rhythmic echoes or ambient smears
- Built-in speaker provides immediate portable monitoring without extra gear
- Stereo outputs support headphones or integration into larger systems
- Powered via AA batteries, external supply, or Eurorack bus for flexible setup options
- Side-locking ribs allow multiple CPM units to connect for modular expansion
Specifications
CPM DS-2 Analog Drone Synthesizer
Dimensions
- Front Panel: 213.0 mm Wide x 128.5 mm High
- Eurorack Panel Size: 42HP Width
- Overall Dimensions (With Knobs And Switches): 242.0 mm x 134.0 mm x 59.0 mm
Power & General
- Voltage Source: 12V DC (Eurorack Standard)
- Battery Power: 6x AA Batteries (9V Operation)
- Under Voltage Protection: Shuts Down Below 5.5V
- PSU: 12 VDC / 200mA, 5.5mm / 2.1mm (Pin) Barrel Plug, Centre Positive
- Batteries: 6x AA / LR6 / HR6 Batteries
- Eurorack Power Connector: 10-Pin (+12V/160 mA, -12V/60 mA)
- Product Code: STYLODS2
Ultra LFO
- Rate (Knob) Frequency Range: 0.02 Hz To 70 Hz
- Rate (CV IN) Voltage Range: -7.5 V To +7.5 V, Frequency Range: 0.006 Hz To 140 Hz
- Reset (CV IN) Gate/Trigger Input Logic High: 0.7 V To 12 V
- Wave I/II (CV OUT) Output Level: 7.2 Vpp (Triangle)
- Output Impedance: 1 kΩ
Drone I / II
- Oscillator Type: VCO3340 Wide Range Precision Analog Oscillator (Pulse/Triangle/Saw Wave)
- VCO Pitch (Knob) Frequency Range: 27 Hz To 1.6 kHz
- VCO Pitch (CV IN) Voltage Range: -4 V To 7.5 V, Frequency Range: 27 Hz To >25 kHz
- Sub-Oscillator Frequency Range (CV): 7 Hz To >13 kHz (Pulse Wave)
VCF
- Filter Type: VCF3320 State Variable (LP/HP) 12dB/Oct Analog Filter
- Cutoff (Knob) Frequency Range: 15 Hz To 12 kHz
- Cutoff (CV IN) Voltage Range: -4 V To +7 V, Frequency Range: 15 Hz To >25 kHz
- Resonance: 0 To Self-Oscillation
- Out Output Level: 6.5 Vpp / +9.4 dBu (Triangle Wave)
- Output Impedance: 1 kΩ
Mixer
- AUX IN Attenuation: -∞ To 0 dB, Gain: +6 dB / +12 dB
- Main OUT Output Level: 5 Vpp / +7.3 dBu
- Output Impedance: < 200 Ω
- Phones Output Level: 1.9 Vpp / -1.2 dBu
- Output Impedance: < 15 Ω
Effects
- Delay Time Range: 70 ms To 450 ms
- Repeat Range: 1 To Self-Oscillation
- Reverb: 8 Room/Plate/Hall Algorithms
- Decay Range: 500 ms To 2000 ms
CPM DF-8 Modular Analog Multi-Mode Filter
Dimensions
- Front Panel: 213.0 mm Wide x 128.5 mm High
- Eurorack Panel Size: 42HP Width
- Overall Dimensions (With Knobs And Switches): 242.0 mm x 134.0 mm x 59.0 mm
Power & General
- Voltage Source: 12V DC (Eurorack Standard)
- Battery Power: 6x AA Batteries (9V Operation)
- Under Voltage Protection: Shuts Down Below 5.5V
- PSU: 12 VDC / 200mA, 5.5mm / 2.1mm (Pin) Barrel Plug, Centre Positive
- Batteries: 6x AA / LR6 / HR6 Batteries
- Eurorack Power Connector: 10-Pin (+12V/160 mA, -12V/60 mA)
- Product Code: STYLODS2
Ultra LFO
- Rate (Knob) Frequency Range: 0.02 Hz To 70 Hz
- Rate (CV IN) Voltage Range: -7.5 V To +7.5 V, Frequency Range: 0.006 Hz To 140 Hz
- Reset (CV IN) Gate/Trigger Input Logic High: 0.7 V To 12 V
- Wave I/II (CV OUT) Output Level: 7.2 Vpp (Triangle)
- Output Impedance: 1 kΩ
Drone I / II
- Oscillator Type: VCO3340 Wide Range Precision Analog Oscillator (Pulse/Triangle/Saw Wave)
- VCO Pitch (Knob) Frequency Range: 27 Hz To 1.6 kHz
- VCO Pitch (CV IN) Voltage Range: -4 V To 7.5 V, Frequency Range: 27 Hz To >25 kHz
- Sub-Oscillator Frequency Range (CV): 7 Hz To >13 kHz (Pulse Wave)
VCF
- Filter Type: VCF3320 State Variable (LP/HP) 12dB/Oct Analog Filter
- Cutoff (Knob) Frequency Range: 15 Hz To 12 kHz
- Cutoff (CV IN) Voltage Range: -4 V To +7 V, Frequency Range: 15 Hz To >25 kHz
- Resonance: 0 To Self-Oscillation
- Out Output Level: 6.5 Vpp / +9.4 dBu (Triangle Wave)
- Output Impedance: 1 kΩ
Mixer
- AUX IN Attenuation: -∞ To 0 dB, Gain: +6 dB / +12 dB
- Main OUT Output Level: 5 Vpp / +7.3 dBu
- Output Impedance: < 200 Ω
- Phones Output Level: 1.9 Vpp / -1.2 dBu
- Output Impedance: < 15 Ω
Effects
- Delay Time Range: 70 ms To 450 ms
- Repeat Range: 1 To Self-Oscillation
- Reverb: 8 Room/Plate/Hall Algorithms
- Decay Range: 500 ms To 2000 ms