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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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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.
An oscillator is the core sound source in a synthesizer, responsible for generating the raw audio signal that everything else is built from. It produces basic waveforms such as sine, saw, square and triangle, which can then be shaped and processed into more complex sounds.
What makes oscillators so important is their role in defining the character of a sound. Different oscillator types and designs can produce anything from smooth, pure tones to rich, harmonically complex textures. In modular systems, multiple oscillators can be combined, tuned and modulated to create evolving and expressive sounds.
Oscillators are simply great — fundamental, versatile and essential to synthesis. Whether you’re building basic tones or complex soundscapes, they are at the heart of your sound, and you will not be disappointed.