Pricing and availability

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Reverb
$655.58 New
$521.74 Used
Thomann
5.0 (5)
$639.00 $635.00 $4.00 · All time low

Average Price: $604

High-end/Boutique

$149

$350+

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Price History

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

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Description

Step into the world of limitless sonic creativity with the Frap Tools Brenso, a modular synthesizer that captures the essence of analog innovation. Designed for musicians and sound designers who crave versatility, this analog dual oscillator module is a powerhouse of auditory exploration. With its two Thru-Zero oscillators featuring triangle cores, Brenso offers a rich palette of tones that can be shaped and molded to your heart's content.

Each oscillator is equipped with coarse and fine tuning, making it easy to dial in the perfect frequency. The linear and exponential FM inputs, complete with attenuators, add layers of depth to your sound. What's more, the green oscillator doubles as an LFO, providing wave manipulation opportunities that push the boundaries of conventional synthesis.

Perfectly synced oscillators ensure harmony in your creations, while the newly developed CV-controllable waveshaper and wavefolder bring a unique edge to your soundscape. Add a percussive punch with the trigger input and decay envelope tailored for the waveshaper, or explore intricate textures through the internal VCA that controls modulation depth.

For those who love to experiment, Brenso offers four internal modulation busses, including FM per oscillator, waveshaper, AM, and ring modulation. This module is a must-have for any modular setup, allowing you to sculpt sound with precision and flair.

Key Features:

  • Analog dual oscillator with two Thru-Zero oscillators
  • Coarse and fine tuning with linear and exponential FM inputs
  • Green oscillator can function as an LFO
  • Oscillator synchronization for coherent soundscapes
  • CV-controllable waveshaper/wavefolder for innovative sound shaping
  • Internal VCA for modulation depth control
  • Trigger input and decay envelope for percussive sounds
  • Four internal modulation busses: FM, waveshaper, AM & ring modulation

Product specs

Available since July 2020
Analog Yes
Digital No
Width 30 TE / HP
variants Frap Tools

FAQs

Is the Frap Tools Brenso a polyphonic or monophonic synthesizer module?

The Frap Tools Brenso is a monophonic modular synthesizer module, designed for creating complex and evolving sound textures.

What are the key features of the Frap Tools Brenso's sound engine?

The Frap Tools Brenso features dual oscillators with FM synthesis capabilities, wavefolder, and a complex modulation matrix for rich, dynamic sound creation.

How wide is the Frap Tools Brenso module, and will it fit in my Eurorack setup?

The Frap Tools Brenso is 30 HP wide, making it a compact yet feature-rich addition to most Eurorack modular setups.

Is the Frap Tools Brenso an analog or digital synthesizer?

The Frap Tools Brenso is an analog synthesizer module, providing warm, organic sound characteristics typical of analog synthesis.

Can the Frap Tools Brenso be used for live performance settings?

Yes, the Frap Tools Brenso is suitable for live performances, offering hands-on control and versatile sound shaping capabilities ideal for dynamic soundscapes.

Frap Tools

Frap Tools

Frap Tools BRENSO – Entangled Sound Sources (Eurorack Oscillator)

Video thumbnail for Frap Tools BRENSO – Entangled Sound Sources (Eurorack Oscillator) by Frap Tools

Frap Tools BRENSO – Entangled Sound Sources (Eurorack Oscillator)

Frap Tools

Frap Tools

Video thumbnail for Frap Tools Brenso Overview/First Patches by Derrick Evans

Frap Tools Brenso Overview/First Patches

Derrick Evans

Derrick Evans

Video thumbnail for NAMM 2020: Frap Tools Brenso Complex Oscillator Sounds Wild! by sonicstate

NAMM 2020: Frap Tools Brenso Complex Oscillator Sounds Wild!

sonicstate

sonicstate

Video thumbnail for Frap Tools Brenso Sound Demo (No Talking) by Bonedo Synthesizers

Frap Tools Brenso Sound Demo (No Talking)

Bonedo Synthesizers

Bonedo Synthesizers

Reviews

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Frap Tools Brenso.

Features and functionality

  • The Brenso offers a simplified modulation normalisation through visual cues, avoiding the need for memorizing button press shortcuts.

    Source
  • Brenso includes frequency locking, making frequency adjustments more manageable and FM modulation more user-friendly.

    Source
  • Brenso is praised for its ability to achieve clean, glassy sounds, which some users find superior to Vortex's output.

    Source

Comparisons

  • Unlike the CS-L, Brenso's trimmers allow separate timbre control adjustments, enhancing sonic customization.

    Source
  • Brenso excels in producing both aggressive and pretty sounds, while Mindphaser is noted for a more brutish, uglier tone range.

    Source

User experience

  • Owners report Brenso encourages experimentation more than CS-L, avoiding the staleness from using CS-L as separate wavefold oscillators.

    Source

Build quality

  • Brenso's knobs are well-sized and spaced, improving playability compared to CS-L's more cramped wavefolder controls.

    Source

Setup and maintenance

  • Despite its 300+ mA draw, users manage to integrate Brenso alongside other power-hungry modules like Hermod and Quadrax.

    Source

Use cases and applications

  • Brenso's dual FM knobs and mellow-sounding wavefolder are highlighted as inspiring creativity in modulation exploration.

    Source
  • Owners find Brenso suitable for a wide range of styles, from drone and IDM to noise and experimental, emphasizing its versatility.

    Source

Critic Reviews

Frap Tools’ BRENSO weaves waveforms with fascinating results

musictech.com

Frap Tools' BRENSO offers an intriguing blend of modulation possibilities and unique sound generation, making it a compelling option for Eurorack enthusiasts. However, its complexity may intimidate those less familiar with in-depth sound design. Priced at €639, it balances advanced features with accessibility, though the steep cost could be a barrier for some. Overall, BRENSO shines in its innovative design but demands a learning curve that might not suit every musician's needs.

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Artist usage

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See how Afterlife uses Frap Tools Brenso

Afterlife

Music Producer

...
Verified via Facebook

In a studio tour video posted on Facebook, Steve Miller, known as Afterlife, showcases his collection of instruments, including a Frap Tools BRENSO.

Genre Usage

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

Used With

Based on how musicians on Equipboard use Frap Tools Brenso, it is most commonly used with the following gear.

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