More Info About Free 2-Day Standard Ground Shipping

Close Window
Just Arrived

Roland TB-03 Bass Line  

Item #: 
  • Write a Review

The battery-powered TB-03 is a direct descendant of the famous TB-303 Bass Line Synth. The layout and controls are unchanged, so it works just like the original. It sounds like it too, thanks to Rolan... Read More

Add to Wish List
Special Financing Offer
$15/month for 24 months
Guitar Center Gear Card

0% Interest for 24 Months*. 24 Equal Monthly Payments required. Valid through  10/31/2016
Get Details

GC Gear Card
Special Financing Offers
Learn More
FREE STORE PICK UP Available Today Denver, CO (5.5  mi) Change Pick Up Store

  • Pro Coverage Eligible
  • Free Shipping
  • Easy Returns


  • Chat Now
  • Call 866-498-7882

The battery-powered TB-03 is a direct descendant of the famous TB-303 Bass Line Synth. The layout and controls are unchanged, so it works just like the original. It sounds like it too, thanks to Roland’s advanced ACB technology that recreates the hypnotic liquid grooves of the magic silver box. But the new TB-03 goes even further, with several enhancements not found on the original model. The four- digit LED display makes programming easier and more accurate, while overdrive and delay effects let you unleash a twisted, tribal wall of sound to send the crowd into a frenzy. Back in the studio, the TB-03 can send control information via MIDI or its USB port, the latter of which also functions as a 24-bit/96 kHz audio interface.

The TB-03 accurately emulates the expressive, slippery sound of the TB-303, and even adds a few surprises. Saw and square waveforms are available, along with all of the rotary control knobs that help shape the 303’s unique character, including tuning, cutoff, resonance, envelop mod, decay, and accent.

New Features Not Found in the Original
The TB-03 includes several enhancements over the original TB-303. Firstly, the four-digit LED display makes programming easier and more detailed, since you now have a visual representation of the value being edited. Then there are a variety of overdrive, delay, and reverb effects that dramatically change the mood and tone of the TB-03, going from smooth to spiky to squealing. Programming patterns is also easier thanks to newly added functions that include step write, shuffle, and fine tempo control. Finally, the inclusion of MIDI and USB ports mean that the TB-03 can send and receive control information and connect easily to computer-based DAWs.

Classic TB Sequencer with Enhanced Functions
If you’re familiar with the TB-303’s programming method, then you’ll feel right at home with the TB- 03. The original Pitch and Time write modes are included, along with an all-new Step mode. Pattern programming is also enhanced by the LED display, which shows the current step in the sequence as well as showing fine tempo values (such as 125.5 BPM). The internal sequencer can be triggered externally via the trigger input, and you can even switch between write and play modes without stopping pattern playback, opening up new possibilities for live performance.

Connect with External Gear
The TB-03 includes MIDI IN/OUT ports and USB, allowing control information to be exchanged with other instruments and devices. This turns the TB-03 into a versatile controller, especially as you can use the CV/Gate output to control external analog gear and modular synthesizers. This level of control works both ways, thanks to the trigger input that lets external gear drive the TB-03’s internal sequencer. Once connected to a PC or Mac, both audio and MIDI data can be sent through the USB port.

Battery or USB Bus Power
Some of the best music is made away from the studio, so the Roland Boutique series runs on 4 x AA batteries, ready for when inspiration strikes. Alternatively, the TB-03 can run on USB bus power.

USB Audio Interface for Direct Recording to Your DAW
Via its USB port, the TB-03 functions as a high-quality 24-bit/96 kHz audio interface, providing a simple and reliable way of recording directly to your DAW application. You can keep your favorite settings and sequencer patterns safe too via the USB data backup function.

  • 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
  • 24 bit/96 kHz stereo IN/OUT USB audio interface
  • 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

Pro Coverage gives you added warranty protection for your new gear. Stepping in where the manufacturer's "normal wear and tear" coverage ends, our Pro Coverage program offers you upgraded coverage if your product ever fails Read More.

Pro Coverage includes
  • Accidental damage protection (new gear only)
  • Expedited repair
  • Free shipping (for returns or repairs)
  • 100% coverage for commercial use
  • Extended return period
  • Extended price protection
  • No lemon guarantee
  • Free transfer of coverage to a new owner
  • Repair costs covered for up to three years from date of purchase
  • Repair authorization-toll-free by phone or via the web
  • Customer Reviews

Review Snapshot

by PowerReviews
RolandTB-03 Bass Line

(based on 2 reviews)

Ratings Distribution

  • 5 Stars



  • 4 Stars



  • 3 Stars



  • 2 Stars



  • 1 Stars



Reviewed by 2 customers

Displaying reviews 1-2

Back to Top


Love it... TB303 Sound with Distortion and Delay!!!

By Billy K

from Peoria Il.

Verified Buyer

Comments about Roland TB-03 Bass Line:

Works and Sounds Great. Sounds like the real thing at a fraction of the price of buying an original TB303.

  • Was this a gift?:
  • No

TB-03: The Real Deal

By Galatra

from Houston, TX


  • 303 Nostalgia
  • Compact
  • Easy to program
  • Fun Control Knobs
  • Great for Live or Mobile Performances
  • Internal Effects (Overdrive, Delay, etc.)
  • Just like the original, Sounds like the Original
  • LED display
  • Lightweight for carrying
  • Solid build


    Best Uses

    • Live Performances
    • Mobile
    • Records with Ableton, FL Studio, or any DAWs

    Comments about Roland TB-03 Bass Line:

    This is the greatest 303 unit for the buck! It brings back memories of all the years when acid house was born. The TB-03 sounds extraordinary with pulsating bass rhythms, giving a reason why Electronic Dance Music (EDM) is popular today. It makes me want to learn back from its roots and learn how the TB-303 generation emerged from its underground soul. Overall, Roland's TB-03 makes more room for the EDM producer's future in electronic music production.

    Roland's TB-03 is a small, compact bassline synth controller with similar capabilities as the original TB-303. The only new features that is different from its previous model is the LED display screen and internal effect knobs. The LED display shows the amount values of Tempo, Steps, etc., displayed in this unit to help prevent guesswork or trial and error. However, the main control knobs, such as Tuning, Cutoff, Resonance, Env Mod, etc, do not display any values when you are tweaking. This gives an Analog feel of how the TB-03 should sound to your liking or preference. I recommend this for any Electronic producer to purchase this unit, while you can, so that not only do you have to waste your time on spending money for the original TB-303 from third party sources, you can learn the fundamentals roots with this modern unit and enjoy it for a lifetime. Roland did an excellent job in bringing back this classic instrument.

    • Was this a gift?:
    • No

    Displaying reviews 1-2

    Back to Top

    You are changing the Ship-To country.

    Our product catalog varies by country due to manufacturer restrictions. If you change the Ship-To country, some or all of the items in your cart may not ship to the new destination.