Behringer TD-3-BU Analog Bass Line Synthesizer - Blue

The Behringer TD-3-BU is an analog bass line synthesizer that faithfully recreates the architecture of one of electronic music's most iconic sound generators. At its core is a pure analog signal path featuring a VCO with selectable sawtooth and square waveforms, a 4-pole low-pass resonant filter with dedicated controls for cutoff, resonance, envelope modulation, decay, and accent, and a VCA — all built using matched transistors to ensure the warm, squelchy character that defines the acid bass sound. The transistor-based wave-shaping circuitry adds harmonic richness that digital emulations struggle to replicate.

Beyond its sound engine, the TD-3-BU includes a 16-step sequencer for programming basslines directly on the hardware, making it a self-contained instrument for live performance or studio experimentation. A built-in distortion circuit lets you push the output from smooth sub-bass into aggressive, overdriven territory. For producers who want thicker textures, the poly chain feature supports linking up to 16 TD-3 units together. The blue finish gives it a distinctive look on any setup, and its compact desktop form factor fits easily into crowded studio spaces or live performance rigs.