Behringer TD‑3‑RD – Analog Bass-Line Synth Inspired by a Legend The Behringer TD‑3‑RD brings the iconic acid house sound into your modern studio. This compact analog bass-line synthesizer is based on the legendary TB‑303 circuitry and combines classic VCO, VCF, and VCA signal path with modern features like distortion and poly‑chain – giving you complete creative freedom. Product Features Fully analog signal path with hand-matched transistors VCO with sawtooth and square wave, classic 4‑pole low-pass filter 16‑step sequencer with 7 tracks and up to 250 user patterns Built-in arpeggiator with a wide range of patterns DS‑1 inspired distortion adds aggressive character Poly‑chain allows linking up to 16 units for polyphony 11 knobs and 28 switches for real-time access to all key parameters Comprehensive MIDI and USB implementation with channel selection and voice priority Designed in Italy – authentic feel with modern control Authentic Sound, Modern Versatility TD‑3‑RD delivers all the essentials for classic acid and techno basslines. Its analog signal path offers warm, organic tone – from subtle filter sweeps to sharp resonance and distorted growls. The poly‑chain feature allows chaining multiple TD‑3 units for layered, polyphonic textures. Use Cases Perfect for electronic music producers working in acid house, techno, synthpop, and more. Its easy-to-use sequencer and intuitive interface make it ideal for live performances and studio work alike. Also a great fit for sound designers, game audio, or retro enthusiasts looking for an expressive analog synth. Technical Specifications Type: Analog bass-line synthesizer Oscillator: Saw & square waveforms with transistor-based shaping Filter: 4‑pole low-pass with cutoff, resonance, envelope, decay, and accent Sequencer: 16 steps, 7 tracks, 250 user patterns, integrated arpeggiator Distortion: On/off, based on DS‑1 Poly‑chain: Link up to 16 TD‑3 units for polyphony Controls: 11 knobs, 28 switches Connectivity: MIDI In/Thru, USB-B MIDI, CV/Gate (Filter In, CV In/Out) Audio Outputs: 1x 1/4" TRS line out, 1x 3.5 mm headphone out (32 mW) Power Supply: 9 V DC adapter (included), power consumption ~2 W Dimensions: 305 × 165 × 56 mm; Weight ~0.8 kg (packaged ~1.27 kg) Materials and Construction The body is made of durable plastic with metal reinforcements – lightweight yet sturdy. Knobs and switches are ergonomically placed for quick access during live sets. Full patchbay, MIDI, and USB ports enable seamless integration into studio and modular setups. Included in the Box Behringer TD‑3‑RD synthesizer 9 V DC power supply USB‑B to MIDI cable Quick start guide / manual Why You Should Choose the TD‑3‑RD The Behringer TD‑3‑RD is a powerful, authentic analog tool combining the soul of the TB‑303 with modern distortion and poly‑chain features. Whether you're building acid basslines, ambient textures, or rhythmic sequences, this synth offers creative freedom and a unique sonic identity.