Behringer TD-3 Analog Bass Synth *Excellent Condition*

The TD-3 is Behringer's take on the Roland TB-303, the bass synthesizer that accidentally invented acid house. The original was a commercial flop when it shipped in 1981 — too fiddly, too weird, too far outside what anyone expected from a bass machine. Then Chicago producers got hold of cheap used units in the mid-80s and the rest is history. Behringer's recreation keeps the full analog signal path — matched transistors, VCO, VCF, VCA — and adds a few modern conveniences the original never had: MIDI, USB, CV/gate outs for modular integration, and a distortion circuit modeled after the Boss DS-1. The sequencer holds 250 patterns across 7 tracks. It's an honest, affordable way into that sound.
This unit is in excellent condition and fully functional across all controls and functions.
- Make: Behringer
- Model: TD-3-YW
- Color: Yellow
- Type: Analog bass line synthesizer
- Oscillator: VCO, sawtooth and square waveforms with transistor wave-shaping
- Filter: 4-pole low-pass resonant VCF with cutoff, resonance, envelope, decay, and accent controls
- Distortion: Yes, DS-1-style circuit, switchable
- Sequencer: 16-step, 7 tracks, 250 user patterns
- Arpeggiator: Yes
- Poly chain: 16-voice across multiple units
- Controls: 11 knobs, 28 switches
- Connectivity: 1/4" audio output, headphone output, MIDI in/out, USB, CV out (3.5mm), gate out (3.5mm)
- Power: 9V DC adapter, center negative
- Modifications: none
- Includes: none
Ships carefully packed and insured for full value.
International buyers are welcome — please contact us for a shipping quote before purchasing.
About Mill River Music
Mill River Music is an independent, human-powered music shop located in downtown Northampton, MA, run by a team of players, enthusiasts, and certified repair technicians. Every piece of used gear we sell is personally inspected, tested, and set up before it ships — we don't list it until we'd be happy to play it ourselves.
As Martin and Taylor certified techs, we hold our guitar work to a high standard, and we're committed to full transparency about the condition of everything we sell. No surprises.
When you buy from Mill River, you're supporting an independent local business that genuinely cares — about gear, about players, and about doing things right. We're here every step of the way. Reach out anytime.