Befaco – Rampage – DIY Partial Kit

£77.00 (Excl. VAT)

The Rampage is Befaco’s approach to an old invention: the Serge/Buchla ramp generator.

Note: This is a partial kit only. For the Full DIY Kit go HERE

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SKU: ParKit_Befaco_Rampage Categories: , , , , Brand: HP Size: 18 HP


The partial kit of the Rampage module. Includes PCB/Panel Set + Rare parts – see below for a full list of what’s included.

Rampage is Befaco’s approach to an old invention: the Serge/Buchla ramp generator.

They have taken the idea of a “patch programmable” function generator/processor, put two units in the same module and expanded them with new functions and ways to combine them: Slope detectors, analog logic functions, and evolved outputs.

Some Rampage applications:

  • Voltage controlled Attack Decay envelope
  • Attack Sustain Release Envelope
  • More complex ADSR Style Envelope
  • Dual VCO. With Square, PWM, Saw, Log, Exp and Triangle shapes. Hard and soft sync
  • Gated VCO
  • VCO + Analog AND Gate (As ADTimbral VCA)
  • Dual Low Pass Filter
  • Dual Low pass Filter with VCO soft sync
  • Low Pass Filter + AD Envelope
  • Dual “syncable” voltage controlled LFO with Square, PWM, Saw and Triangle shapes)
  • Complex LFO . Function combination
  • CV controlled and “Ping-Pong” LFO.
  • Dual Slope detector. Distinguishes when and incoming signal (CV or audio) is rising or falling, and generates gates in concordance
  • Comparator. Send a gate when B IN is bigger than A IN
  • Polyrythmic gate generator. With both channels synced between each other, it generates several “complex rhythm” gates
  • Voltage controlled Slew limiter with independent attack and decay control and continuous variable shape between Log, linear and expo
  • Peak Voltage follower. Max Out follow the maximum Level of the two inputs
  • Minimum Voltage Follower. Min Out follow the minimum level of the two inputs
  • Envelope follower with adjustable response for rising ans falling flanks
  • Voltage controlled Trigger Delay
  • Burst Generator


  • Built around two voltage-controlled Integrators aka Lag Processors.
  • Convert square signals into ramp waveforms
  • Achieve “Portamento” or “Glide” effect when applied to pitch CV signals.
  • Basic lowpass filtering

This Partial kit contains:

  • 1x Rampage Panel/PCB Set
  • 1x Potentiometer Single gang 1M Linear
  • 2x Mini Toggle Switch ON-OFF-ON SPDT
  • 2x Mini Toggle Switch ON-ON SPDT
  • 1x Knob Davies White T36 Shaft
  • 23x Jack 3.5mm Mono PCB
  • 8x Toggle Switch Cap Red
  • 2x Potentiometer Dual gang 10k Linear PCB
  • 2x Push Button Red Cap N.O.
  • 2x Knob Micro 7.5mm White T36 Shaft
  • 4x Sliding Potentiometer 30mm 100k Linear PCB
  • 5x Black Bananut for Pots
  • 4x Bananut Switch
  • 11x Red Bananuts
  • 12x Black Bananuts


  • Power Consumption: +12V: 110mA, -12V: 90mA
  • Width: 18 HP
  • Depth: 26mm (including power connector)
  • Aluminium, heat-treated front panel

Rampage – Build Document & BOM | User Manual | iBOM


Additional information

Weight 0.244 kg
HP Size

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