Looking for fat analog bass and leads with a modern twist This used Behringer PROTON is in great condition and delivers powerful synth performance in a compact modular-friendly design. Inspired by the classic SH-101, the PROTON features a single VCO with sub-oscillator, noise generator, multi-mode VCF, and a flexible 32-step sequencer. Its semi-modular architecture includes 18 CV connections for full Eurorack compatibility, making it perfect for both standalone use and system integration. With easy-to-use controls and rich analog tone, this unit is ideal for studio production and live performance. All features have been tested and are fully functional. Whether you're a synth novice or veteran, the Behringer PROTON offers serious analog power at an unbeatable price.