There are only the 2 models.
There is the standard TD-3 (which is pretty much a 1:1 clone of the original) and the modded Td-3-MO.
Yes, the prices do vary according to the colour. Just down to stock levels I assume.

 

never heard of differences in sound between colors.
i have both. the modded out has a much different sound. if you want to go for that "real" typical 303 sound, go for the td3!

if you want to do more heavy slide sequences or use it as a kind of a bassline thing, and you dont care about the acid sound, you can try the MO.

i never managed to get emanuel top like sequences out of the MO for example. its just to heavy modded and the sharp resonance fu##s up things really quick

 

TD-3:
Analogue Bass Line Synthesiser

• Fully analog signal path from VCO, VCF and VCA
• VCO switchable between sawtooth and rectangular waveform
• 4-Pole low-pass filter with resonance
• VCF envelope intensity and envelope decay adjustable
• Adjustable accent
• Integrated distortion with tone control
• 16-Step sequencer with 250 pattern memory locations
• Poly-chaining of up to 16 devices possible
• Audio input for sound processing of external sources: 3.5 mm Jack
• Sync In & CV/gate outputs: 3.5 mm Jack
• Stereo headphone output: 3.5 mm Jack
• Line output: 6.3 mm Jack
• USB-MIDI and MIDI In/Out
• Colour: Silver
• Includes power supply (9 V DC)
• Dimensions (H x W x D): 56 x 305 x 165 mm
• Weight: 0.8 kg

Modded TD-3:
Analogue Bass Line Synthesizer

• Extended version of the TD-3 with numerous new functions
• Controls available for the 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 a 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
• A USB MIDI and a MIDI in / out
• Dimensions (H x W x D): 56 x 305 x 165 mm
• Weight: 0.8 kg
• Colour: silver
• Incl. a 9 V DC power supply unit

 

Andertons in the UK has them instock

https://www.andertons.co.uk/behringer-TD-3-MO-AM-modded-out-analog-bass-line-synthesizer-in-yellow

 

yellow one sounds the best

 

buy an moog mother 32 killer acid basslines like roland
i have 2 moogs mother 32

 

it is. just a different plastic box on the outside
actually as its analog, they might vari all a bit, independently from color. but as the single parts made more accurate these days then in the 80s, i think it might only be in nuances they vari.

 

Be careful, you start as a game but then you can never go back. Buy the first one, then another, then a drum machine, an exotic sequencer, a vintage Oberheim, a modular rack ....
There is a risk that, without even realizing it, you will become a hipster playing his dawless jams while sipping an herbal tea, surrounded by his cactus and succulents.

 

the mo is definitely worth the difference in both sound and playability you made a good choice

 

It's harder to get a 1:1 replica of the TB-303 with the TD-3 MO.

I have both TD3, TD3mo and TB-303.

TD3 Mo has more features but if you're looking for a true 1:1 TB-303 emulation, TD3 is by far easier.

Dont get me wrong : I love the TD3 mo, it's more like a DevilFish 303, but some extended functions may be disturbing and/or useless for many.

NB : all different colored TD3 are exactly the same inside ....

 

Last edited: Apr 27, 2022

Or buy the Behringer Crave. A pretty good sounding replica of the Mother 32.

 

you are right behringer crave is great for this price ..

 

is easy go for the modded out, if i knew that they will release model, i would definetly picked it up instead of the regular td-3 (which sounds great btw)