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Befaco is a Spanish modular synthesiser manufacturer based in Barcelona, best known for Eurorack modules that balance experimental ideas with solid, practical engineering. The company has strong roots in DIY culture, with many of its designs available both as fully built modules and as kits for hands-on builders.
Their modules cover a wide range of functions including oscillators, filters, modulation, sequencing, utilities, and performance tools, often with a playful edge and a focus on interaction. Befaco gear is popular with modular users who enjoy understanding how their systems work and who value flexibility, patchability, and character over polished presets.
For SynthForSale, Befaco fits into the Eurorack and modular synthesis category — versatile instruments and utilities aimed at creative musicians who want expressive, adaptable modular systems with a strong DIY-friendly ethos.
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CV is control voltage used to transmit continuous electrical signals between electronic instruments and modules. It allows parameters such as pitch, filter cutoff, amplitude, and modulation to be controlled in a fluid, analogue manner. CV is fundamental to modular and semi-modular systems, enabling direct, real-time interaction between sound sources, controllers, and processors.
Eurorack is a modular synthesis format with standardised dimensions, power connections, and signal levels. Eurorack systems are built from individual modules mounted in cases, allowing users to create highly customisable instruments tailored to specific sound design and performance needs.
New Gear is unused and in original condition, supplied as it leaves the manufacturer. It is chosen for guaranteed reliability, full functionality, and the assurance of manufacturer support. For example, buying new ensures access to the latest design revisions, included accessories, and official warranty coverage.
Stereo is a two-channel sound format that uses separate left and right signals to create a sense of width and space. It is used to place sounds across the listening field, making music feel more immersive and detailed. For example, a stereo synth or effect can spread a pad or texture across both channels, giving a track greater depth and separation compared to a mono signal.