Behringer TD-3-LM Analog Bass Synthesizer Lime Green — main product image

Behringer TD-3-LM Analog Bass Synthesizer Lime Green

Behringer

Behringer TD-3-LM Analog Bass Synthesizer Lime Green

Name: Behringer TD-3-LM Analog Bass Synthesizer Lime Green
Brand: Behringer
SKU: TD-3-LM

★★★★★4.0 (86 reviews)

Behringer's TD-3-LM puts the iconic 303 acid bassline sound in your hands with pure analog circuitry and a punchy lime green finish.

$149.00*

Check availability

*Price sourced from Amazon.com. Last updated:Jun 27, 2026.Price and availability are subject to change.

Affiliate Disclosure: Studio Supplies may earn a commission from qualifying purchases made through links on this page, at no additional cost to you. This helps support our editorial team.

Notice a mistake? Let Us Know

Overview

The Behringer TD-3-LM is built for one purpose: delivering the visceral, squelching analog bassline that defined acid house, techno, and decades of electronic music since the 1980s. Its fully discrete analog signal path — sawtooth and square VCO feeding a 4-pole low-pass resonance filter into a responsive VCA — produces the kind of organic, voltage-driven tone that reacts differently to every tweak of the cutoff and resonance. The envelope, accent, and rot controls aren't decorations; they're the mechanism by which a static bassline becomes something that breathes and moves. The lime green colorway signals what this instrument is: a purposeful, playful instrument built around a single iconic sound.

Construction is compact and plastic-heavy, which keeps costs down but also keeps weight down — the TD-3-LM sits comfortably on a desktop or in a small live rig without demanding real estate. The front panel layout mirrors the original 303 closely enough that anyone familiar with that workflow can orient quickly. MIDI and sync connectivity are solid for both modern and legacy integration scenarios. The onboard distortion adds a layer of usable grit, and with Poly Chain support across multiple units, the TD-3-LM scales beyond its mono roots. It's not a Swiss-army synth — it's a specialist instrument that does its one thing exceptionally well.

Key Features

Authentic reproduction of the original circuit with matching transistors

Pure analog signal path based on legendary VCO, VCF and VCA designs

Sawtooth VCO and Square Waveform with Transistor Waveform Circuit

Amazing 4-pole low-pass resonance filter with cutting, resonance, envelope, rot and accent controls

Specifications

Signal Path

Pure Analog

VCO Waveforms

Sawtooth, Square

Filter Type

4-pole Low-Pass Resonance Filter

Filter Controls

Cutoff, Resonance, Envelope, Decay, Accent

Pros & Cons

👍 Pros

Pure analog circuitry delivers the genuine acid squelch and resonant filter sweep that digital 303 clones struggle to replicate
The 16-step sequencer faithfully reproduces the original's slide and accent mechanics, giving basslines that organic push-pull timing feel
Onboard analog distortion circuit adds real harmonic saturation without needing an external overdrive pedal
MIDI and sync I/O make it a versatile hub in both modern DAW-based rigs and vintage hardware setups
Poly Chain capability opens up genuine multi-voice analog arrangements with additional units

👎 Cons

The 16-step sequencer has a notoriously steep learning curve — programming patterns requires memorizing a non-obvious button workflow
No stereo output; the single mono line-level output limits direct stereo placement without external processing
Limited front-panel modulation options beyond the core 303 controls mean patching creativity requires external gear
The lime green colorway, while distinctive, may be polarizing in professional studio environments where aesthetics matter
No patch memory or preset saving — every sound must be dialed in manually each session

Frequently Asked Questions

Does the TD-3-LM use a truly analog signal path, or is it digitally modeled?

Fully analog — the TD-3-LM uses a discrete VCO, VCF, and VCA circuit based on the original 303 topology, including matched transistors in the filter stage. You're hearing actual voltage, not a digital approximation of it.

How does the 4-pole filter compare to the original Roland TB-303 in terms of character?

The TD-3's filter is a close-tolerance recreation of the original ladder-style low-pass circuit. With resonance cranked near self-oscillation and the cutoff swept via the envelope, you get that characteristic liquid, squelching acid character — the kind that cuts through a mix at any tempo.

Can the TD-3-LM sync to external gear and DAWs?

Yes — the TD-3-LM includes MIDI in/out and sync I/O for integrating with hardware sequencers, drum machines, and DAWs. Clock it via MIDI or use the sync port for legacy din-sync compatibility with vintage gear.

What does the Poly Chain feature allow?

Poly Chain lets you link up to 16 TD-3 units together for polyphonic analog playback, effectively building a chord-capable bass synth from multiple mono voices. Each unit handles one voice in the chain.

Is the onboard distortion effect an analog circuit?

Yes — the distortion is analog, adding harmonic saturation and grit directly to the signal before output. It ranges from subtle drive to aggressive clipping, and it responds expressively to how hard you push the VCA level.