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The TD-3-MO is Behringer's modded take on the Roland TB-303, a pure analog bass synth with a saw/square VCO, a 4-pole resonant low-pass filter and a 16-step sequencer. The 'Modded Out' version adds the mods 303 owners used to pay a technician for: a sub oscillator an octave down, filter FM, variable filter slope, extended envelope and accent controls, and a dedicated overdrive. It suits acid house, techno and electro producers who want 303-style bass lines without vintage prices, and it is more flexible than a stock TD-3 or a clean 303 clone. The trade-offs are the plastic enclosure, the fiddly original-style sequencer and a raw, aggressive tone that is not for everyone.
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Owners treat the TD-3-MO as the best-value way into a modded 303 sound, praising the extra filter and envelope controls and the sub oscillator. Common complaints are the plastic build, the cramped knobs and the awkward TB-303-style sequencer.
The Behringer TD-3-MO Modded Out is an analog bass line synthesizer modeled on the TB-303. It has a pure analog signal path and keeps the VCO, VCF and VCA circuits. Matched transistors in the analog circuitry are used to produce bass lines and leads. No patch cables are needed to start making sound.
The oscillator offers sawtooth and square waveforms, with controls for tuning and shaping and the option to add overdrive. A Sub Oscillator adds an extra octave. The 4-pole low-pass resonant filter has adjustable cutoff, resonance, envelope, decay and accent parameters.
The TD-3-MO adds features beyond the original design. These include a MIDI C/C controllable filter, variable slide time control, a three-mode Sweep Speed switch, an Accent Sweep switch and a Soft Attack control. The onboard sequencer and arpeggiator are built in. The unit is monophonic, but its 16-note Poly Chain function lets several units be chained for polyphonic arrangements. A multi-I/O patchbay connects it to other gear.
