Roland TB-03 Bass Line Synthesizer

Roland TB-03 Bass Line Synthesizer


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SKU: ROLTB03 Category:
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Roland TB-03 Bass Line is battery-powered, and is a direct descendant of the famous TB-303 Bass Line Synth. The TB-03 features the classic sounds of the original TB-303 in the palm of your hand. The TB-03 retains the same layout and controls as the original but with several enhancements. Utilizing Roland’s Analog Circuit Behavior (ACB) technology, the unit recreates the liquid grooves of the magic silver box. The enhanced feature set includes a four-digit LED display, which allows for precision sequencing, while the on-board overdrive and delay effects unleash a torrent of twisted, tribal sounds capable of sending an audience into a frenzy. The TB-03 ships in a silver Boutique DK-01 case and can be powered via USB or the included four AA batteries.


Realistic recreation of the iconic TB-303 Bass Line synth

Retains the 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, including four-digit LED display, overdrive and delay effects, MIDI, fine tempo control, and 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

Control information can be sent and received via MIDI and USB

Built-in powered mini-speaker for instant enjoyment

Compatible with optional K-25m Keyboard Unit


Internal Sound Engine: Bass Synth

Sequencer: 96 patterns, 7 tracks

Effects Types: Tape Echo, Digital Delay, Reverb, Overdrive

Analog Inputs: 1 x 1/8″ (mix in)

Analog Outputs: 1 x 1/8″ (headphones), 1 x 1/8″ (output)

MIDI I/O: In/Out

Other I/O: Trigger in, CV out, Gate out

USB: 1 x Micro-B

Power Supply: Bus powered or 4 x AA batteries

Depth: 5.12″

Width: 12.12″

Height: 2.06″

Weight: 2 lbs. 2 oz.

Additional information

Weight 7 lbs