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Boutique TB-03 Bass Line Synthesizer Module - Image 1

Boutique TB-03 Bass Line Synthesizer Module

DesktopDigitalMonophonic

Back in the 80s, a little silver box called the TB-303 accidentally birthed acid house with its squelchy, sliding basslines that still hypnotize dancefloors worldwide.

This compact module nails that iconic sound using Roland's ACB technology for authentic analog circuit behavior, packing a single digital oscillator with saw and square waveforms into a monophonic powerhouse. Twist the classic rotary knobs for tuning, cutoff, resonance, envelope mod, decay, and accent to sculpt those slippery tones, now with a four-digit LED display for precise programming and fine tempo tweaks like 125.5 BPM. The 16-step sequencer offers original pitch/time modes plus a new step write mode, shuffle for groove, 96 patterns across 7 tracks, and chaining for live sets—trigger it externally or control modular rigs via CV/gate outputs. Overdrive and delay effects add grit and space, while 3.5mm stereo ins/outs, headphone jack, MIDI I/O, micro-USB audio interface (24-bit/96kHz), and a built-in mini-speaker keep it versatile; run it on four AA batteries or USB in a lightweight 308 x 130 x 52mm frame weighing just over 2 lbs.

Players love how it captures the 303's tribal vibe in a portable form, praising the hands-on feel and enhanced workflow, though some note the mini knobs demand careful tweaking in the heat of a jam.

Released

2016

Status

In Production

Synthesizer
Format
Desktop, Micro
Type
ACB, Subtractive, Analog Modeling
Internal Battery
Yes
Voice
A/D
Digital
Polyphony
Monophonic
Oscillators
1
Oscillator Type
Digital
Voices
1
Filter
Lowpass
Envelopes
1
LFO
-
Effects
overdrive, delay, reverb, tape echo
Expression
Aftertouch
No
Velocity
No
MPE
No
Additional
TB-303 recreation, ACB technology, acid bass synth, CV/gate output, Boutique series
Software
-
I/O
Audio In
1 x 1/8" (mix in)
Audio Out
1 x 1/8"
Headphone
1 x 1/8"
MIDI
In, Out
MIDI Type
DIN (5-pin), USB
Ports
USB, Trigger In, CV/Gate, Clock Out, Gate Out
Wi-Fi
No
Workflow
Arpeggiator
Yes
Sequencer
Yes
Mod Matrix
No
Memory
Yes
Measurements
Dimensions
308 x 130 x 52 mm
Weight
2 lbs 2 oz (940 g)
Last updated Mar 21, 2026