Roland TB 03 Bass Line Synthesizer Realistic recreation of the iconic TB-303 Bass Line synth; Sound, character, and user interface of the original TB-303; Hands-on control over expressive parameters, including cutoff, resonance, envelope mod, decay, and accent; New features not found on the original TB-303, four-digit LED display, overdrive and delay effects, MIDI, fine tempo control; Additional functions for pattern creation; Programmable via classic Pitch, Time, and Step write modes; Continue playing a sequence even while switching between write and play modes; CV/Gate outputs for controlling vintage analog gear and modular synthesizers; Dedicated trigger input to drive the internal sequencer; Highly portable for mobile music making; High-quality construction with metal front panel; Battery-operated (4 x AA) or USB powered; 24 bit/96 kHz stereo IN/OUT USB audio interface; Control information can be sent and received via MIDI and USB; Built-in powered mini-speaker for instant enjoyment;