Pricing and availability

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Reverb
$236.10 New
$217.25 Used
Thomann
4.8 (6)
$245.00 $243.00 $2.00 · All time low

Average Price: $232

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$149

$350+

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Based on price data from 1 merchant for "Befaco Rampage". Prices shown reflect NEW condition. Tracking began Apr 7, 2026.

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Description

Unlock a world of sonic possibilities with the Befaco Rampage, a versatile dual function generator designed for the adventurous modular synthesist. This powerhouse module combines traditional control with modern flexibility, offering an array of creative applications that can enhance any setup. Whether you're crafting intricate soundscapes or seeking to inject dynamic movement into your compositions, the Rampage delivers with precision.

At its core, the Befaco Rampage features two independent channels, each equipped with a fader for rise and fall times, a trigger button, and a switchable one-shot or cycle mode. These intuitive controls allow for seamless manipulation of envelopes, functioning as AD or ASR envelopes, VCOs, low-pass filters, LFOs, slew limiters, and more. The module's built-in logic section with gate outputs for MIN, MAX, and B>A ensures that you can tailor your sound with exceptional detail.

For those craving further customization, the Rampage includes CV inputs for rise, fall, and characteristic curve shape per channel, allowing you to sculpt each waveform to your exact specifications. This level of control is perfect for live performances or studio sessions where experimentation is key. Additionally, the module's per channel gate outputs for end-of-cycle (EOC) and rise/fall time provide even greater versatility, making it an indispensable tool for any modular enthusiast.

Key Features:

  • Dual function generator for versatile sound creation
  • Channels with faders for rise and fall, trigger button, and one-shot/cycle mode
  • Applications include AD/ASR envelopes, VCO, low-pass filter, LFO, slew limiter, and comparator
  • Per channel gate outputs for EOC and rise/fall time
  • CV inputs for rise, fall, and characteristic curve shape per channel
  • Logic section with gate outputs for MIN, MAX, and B>A
  • Current consumption: 110 mA (+12 V) / 90 mA (-12 V)
  • Width: 18 HP
  • Depth: 30 mm

Product specs

Available since June 2019
Width 18 TE / HP

FAQs

What are the main functions of the Befaco Rampage?

The Befaco Rampage is a dual function generator that can produce a variety of control voltage (CV) signals, including envelopes, LFOs, and more, making it versatile for modular synth setups.

Is the Befaco Rampage suitable for beginners in modular synthesis?

While the Befaco Rampage offers extensive functionality, it is best suited for users with some experience in modular synthesis due to its complex features and patching options.

How does the Befaco Rampage compare to other function generators?

The Befaco Rampage stands out with its dual-channel design, offering independent or linked operation, and features like CV-controlled rise and fall times, which are not always available in other function generators.

Can the Befaco Rampage be used for audio rate modulation?

Yes, the Befaco Rampage can generate audio rate signals, allowing it to function as an oscillator or for frequency modulation (FM) purposes within a modular synth setup.

What is the width of the Befaco Rampage in a modular rack?

The Befaco Rampage takes up 18 TE/HP in a modular rack, making it a compact yet powerful addition to your setup.

DivKid

DivKid

Befaco - Rampage

Video thumbnail for Befaco - Rampage by DivKid

Befaco - Rampage

DivKid

DivKid

Video thumbnail for Rampage Eurorack Module Features - Befaco.org by Befacosynth

Rampage Eurorack Module Features - Befaco.org

Befacosynth

Befacosynth

Video thumbnail for SELF PATCHED! Befaco Rampage // Complex function generator modulation by DivKid

SELF PATCHED! Befaco Rampage // Complex function generator modulation

DivKid

DivKid

Video thumbnail for Befaco Rampage bouncing ball by Liradigital Music

Befaco Rampage bouncing ball

Liradigital Music

Liradigital Music

Video thumbnail for Befaco Rampage + VCA = Noisegate by Friedensreich 26

Befaco Rampage + VCA = Noisegate

Friedensreich 26

Friedensreich 26

Reviews

PROS

  • Different interface from similar modules for intuitive use

  • Quickly adjustable rise and fall times via faders

  • Switchable range for dynamic performance changes

  • Symmetrical layout for clarity and ease of use

  • Versatile: acts as envelope, LFO, delay trigger, and more

  • Enables complex modulations and enriches patches

  • Offers comparators and logic gates for advanced sequencing

  • Excellent documentation for easy DIY assembly

  • Can function as a whole synth with multiple units

  • Free virtual version available for pre-purchase testing

CONS

  • Lacks the attenuverter and offset capabilities of some competitors

  • Relatively wide, requiring more rack space

  • Limited oscillator tracking, mainly for basic waveforms

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Befaco Rampage.

Use cases and applications

  • Rampage excels as a complex modulator, enabling live improvisation by cross-patching end of cycle triggers for creative sound shaping and modulation.

    Source
  • Rampage excels in creating rhythmic and timed events through its comparator, min/max, EOC, and rise/fall trigger outputs, ideal for complex sound design.

    Source
  • The B>A comparator is used to create a CV-controlled accent gate from a velocity parameter, showcasing its role in dynamic modulation tasks.

    Source
  • Rampage is noted for its ability to serve as a VCO, VCF, or bit crusher, offering diverse sound processing options when alternative modulation sources are needed.

    Source

Features and functionality

  • The Rampage can be used as a filter at audio rate when audio signals are input into inA or inB, offering unique distortion and filtering capabilities.

    Source
  • The Rampage includes a manual trigger button, making it easier to test and create complex modulation patterns without external triggers.

    Source
  • Unique to Rampage are the slope length range switches and integrated rising and falling slope detectors, offering diverse modulation possibilities.

    Source
  • Rampage serves as a versatile slew limiter, allowing CV-dependent glide control over pitch based on whether a melody's pitch is rising or falling.

    Source

Comparisons

  • Unlike Maths, Rampage provides more output options, but lacks Maths' 4x attenuverter, affecting how functions are mixed and output.

    Source
  • While Maths and Rampage both serve as modulators, Rampage provides a different user interaction experience, particularly with its rate-switching capabilities.

    Source

Mods and upgrades

  • For enhanced waveform manipulation, combine Rampage with a Frap Tools 321 and VCA Mixer to expand its features beyond Maths.

    Source

User experience

  • Owners find Rampage's outputs are unipolar, requiring AC coupling or a negative offset circuit for compatibility with other sound sources.

    Source
  • Some users find dedicated modules like LFOs or envelopes easier to use in VCV Rack compared to Rampage, appreciating its versatility more in physical racks.

    Source

Setup and maintenance

  • Using a DIY oscilloscope like the DSO 138 can help users gain more control and direction when experimenting with self-patching on Rampage.

    Source

5.0 out of 5

Based on 1 Review and 3 Ratings

5 star
4 star
3 star
2 star
1 star
delta9

Modular swiss army knife used in every patch

Pretty much a Makenoise Maths, trading the attenuverter section for comparators and logic gates, which makes it more useful for sequencing and clock/trigger type duties. Both are based on the Serge universal slope generator. I originally tried to DIY a CGS DUSG but had a bad PCB. I DIY'ed the Befaco kit and it worked perfectly from jump street. Excellent documentation. Does wide-ranging envelopes, slew, variable shape LFO, limited saw-square-triangle oscillators (maybe 1 octave tracking at best), comparators, square-wave distortion, lowpass filtering, bitcrushing. Just check the manual, there is so many things this module can do I forget about them sometimes. I need another one. You could literally make a whole synth out of 3 or 4 rampages.

Genre Usage

Based on how artists on Equipboard use this gear, it is most commonly found in the following genres.

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