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Behringer TD-3-MO



  • Extended version of the TD-3 with numerous new functions
  • Controls for soft attack, normal and accent decay, filter tracking, slide time and filter FM
  • Switchable sub-oscillator
  • Accent sweep and sweep speed switchable in 3 steps
  • Muffler (VCA soft clipping) switchable in 2 steps
  • Manual Accent button
  • Filter cutoff controllable via MIDI controller
  • Fully analogue signal path consisting of VCO, VCF and VCA
  • VCO switchable between sawtooth and square waveforms
  • 4-Pole low-pass filter with resonance
  • VCF envelope intensity and envelope decay adjustable
  • Accent and overdrive adjustable
  • 16-Step sequencer with 250 pattern memory locations
  • Poly-chaining of up to 16 units possible
  • Audio input for sound processing of external sources: 3.5 mm jack
  • Filter FM and filter CV inputs: 3.5 mm jack
  • Inputs for Accent, Slide, Sync and CV/Gate: 3.5 mm jack
  • Outputs for Accent, Filter and CV/Gate: 3.5 mm jack
  • Stereo headphone output: 3.5 mm jack
  • Line output: 6.3 mm jack
  • USB MIDI and MIDI in/out
  • Dimensions (H x W x D): 56 x 305 x 165 mm
  • Weight: 0.8 kg
  • Colour: Yellow
  • Incl. 9 V DC power supply unit
  • Matching cover: art. 490239 (not included)
  • Matching case: art. 492958 (not included)
  • Matching bag: art. 493544 (not included)
Available since February 2022
Item number 516310
Sales Unit 1 piece(s)
Design Desktop
Polyphony 1
Sound Generation Analogue
MIDI interface 1x In, 1x Out/Thru
Storage Medium Internal
USB-port Yes
Effects Yes
Arpeggiator Yes
Number of Analog Outputs 1
Digital Output No
Display No
Optional Expansions None
Special Features Stepsequencer
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An extended version of the TD-3

The Behringer TD-3-MO is an upgraded version of the company's previous TD-3 model - with "MO" meaning "Modded Out", to highlight its enhanced features. These modifications are inspired by the renowned "Devil Fish" circuits, developed in the 80s for an iconic bass synthesizer. Far from simply being a tribute, however, the TD-3-MO represents a real sonic expansion. Featuring a broader filter range, boosted sub-bass harmonics, enriched FM synthesis, a distortion circuit, and refined attack/decay controls, this synthesizer transcends its predecessor. The Behringer TD-3-MO will work equally well for "Acid" sounds, progressive Rock, Synth Wave, EDM, Pop, or any other style requiring an authentic analogue instrument.

New functions for even more punch

The TD-3-MO’s pure analogue bass oscillator now packs even more of a punch thanks to a multitude of new functionalities. The oscillator volume can be adjusted according to three different settings, while the "Slide" function’s duration has been extended six-fold. The "Accent Sweep" function has three different speeds as well as a high-resonance mode, and the "Muffler" can attenuate high frequencies. A collection of CV inputs and outputs - which include an FM input, a filter input and output, an "Accent" input and output, a "Slide" input, a sync input, general CV input and output, and finally a "Gate" output - allow the TD-3-MO to be integrated into a Eurorack system. It is therefore possible to control the filter cutoff frequency via an external sequencer. The settings can also be controlled from a DAW via MIDI or USB.

A genuine time-travelling marvel

Weighing just 800g, the Behringer TD-3-MO is easily portable - and its ergonomic layout makes it easy to use. The redesigned user interface still follows the same workflow as the original 80s model - taking full advantage of all of the new features, including the specially crafted and adjustable distortion section designed by Behringer for truly fat-sounding results! The unit features a host of CV connections to become part of any Eurorack, however these same connections are now also available on MIDI or USB, so that the TD-3-MO can just as easily be controlled by a DAW. This functionality extends to sound design, as the "Synth Tool" application, which allows users to model their bass lines, is also accessible via DAW. Finally, the TD-3-MO also comes in a silver finish – which is technically identical.

About Behringer

The company, which was founded in Germany by Uli Behringer and now manufactures its products in China, has been known for affordable and great-value equipment since its very first product, the Studio Exciter F. An array of mixing consoles (such as the Eurodesk MX8000), signal processors, and later sound amplification and monitoring equipment, has made it possible for countless musicians to fit out their home studios, practice rooms, and mobile PAs within budget limits that were previously unthinkable. The acquisition of other companies, including Midas, Klark Teknik, and TC Electronic, meant that new product groups were added - and also resulted in the technical expertise of these companies being incorporated into product development.

Computer-aided sound design

All the internal sequences of the Behringer TD-3-MO are via USB. These can then be easily accessed and modified on a computer, then stored or reloaded into the device thanks to the "Recall" and “Store” functions of the "Synth Tool" application. The note values and the total duration of the sequences are also fully definable via the editor. A right click will assign an accent to a particular note, the value of which is then set on the synthesizer itself. The application also manages MIDI routings, the "PolyChain" function, and the calibration of the TD-3-MO.

74 Customer ratings

4.6 / 5

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47 Reviews

What a surprise!
Senth-Sensation 07.07.2022
I have purchased many synthesizers similar to this. Even it’s brother of the TD3.

The build quality of the TD3-MO, It’s very solid I give it an 8 out of 10. The sound is surprisingly both accurate and its own unique sound at the same time.

And as far as the original instrument which inspired TD3-MO, None of them ever really sounded exactly the same. The ones you hear now which are vintage, sounded totally different 40 years ago. I was so grateful to receive one of these at a great price. I feel very fortunate as they have been back ordered for sometime.

This is a very capable Synthesizer, it can make more than squelching squeaking sounds. However if that’s what you are looking for, this does it to perfection. Personally I do not give out praise unless the product is justified and have earned my kind words.

This product is justified.

*congratulations on your purchase, enjoy make & some good music.


Sounds amazing but...
Louis Wheeler 21.06.2024
I've had the TD-3 for a long time and used it for the typical 303 sounds; aggressive accents sequences and for beautiful melodies leads and arps.
But I wanted to get more control and for that "Devil Fish" flexibility. So when I got the TD-3-MO the first day I was bit confused as some of the controls were not acting as they should, for example:

Overdrive: if I have it all the way down, no sound comes through (even having the Volume all the way up) so it always has some overdrive to it.

Decay (filter): if I have a short decay it sounds like it shortens the actual decay of the synth. Not like the TD-3 or original 303.

Then there is stuff like the Accent Sweep that I have to keep always at 2, if not it just sounds too resonant. The SUB OSC is okay, never really use though. And have tried to make some melodies like I do with the TD-3 it just didn't sound that good.

But the thing I use it for, and why I won't sell it (for now), it's for those aggressive Accents sequences, anything that needs a more aggressive 303 I will use the TD-3-MO and being able to control the decay independently of both Accent notes and Normal notes adds lots to the groove

So in conclusion, if you're looking for an overall good sounding 303 go for the normal TD-3. But if you want that more aggressive sounding 303 the TD-3-MO is the way to go.


Beast of a synth
lstf 15.03.2022
Despite sharing part of its name with the TD-3, this thing is its own animal. Way more control over the tone, made me laugh when I tried it out because I'm used to a standard 303.

Excellent service from Thomann as well.


Great sound, layout takes getting used to
Flounderguts 07.10.2022
Full disclosure, I have several 303-type Aira TB-03, a homemade X0XB0X, a darkstar rackmount, and a eurorack X0XHeart.
The TD-3 MO is lots of fun, but I'm still getting used to the Behringer style sequencer. It's not quite as hands on as my X0XB0X (which has some heavy mods) but it is far more predictable when tweaking. I like how light the TD is, and I find a bit of velcro is all I need to stick it in a weird place, so it makes it into more of my "away" jams. For the price, it's a solid piece of kit, as long as you aren't a purist about the 303 sound (and why would you be?) I'm still learning how to get it to play nice with some of my gear (sometimes fiddling with the PPQ helps) but mostly I use it as a triggerable secondary bassline...almost a bit of lead sound, as it's very playable. Fun times.


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