x0xb0x analog bass line synthesizer- 303 clone with Atomic mods - xoxbox

X0xb0x analog synth, designed by ladyada as a clone of the Roland TB-303.  This one has what are referred to as the atomic mods, expanding its capabilities beyond a normal 303 or clone.  Mods include bass boost, overdrive, resonance boosts, vca decay, second vco, vco and vca modulation, envelope mod range switches, and low cutoff.  With the mods, you can get a wide range of tones, like an ultra squelchy acid sound, a huge bassy overdriven sound, or whatever kind of 303 related sound you may want.

In good shape, has some wear on the lettering, especially around the function knob, and some assorted scratches (see pics.)  Everything works as far as I can tell, I have never tried the DIN/sync connection or settings as I do not have any gear that uses DIN.

From the designer:

The x0xb0x is not just another MIDI-controlled TB-303 clone. x0xb0x is a full reproduction of the original Roland synthesizer, with fully functional sequencer. The sequencer can be programmed just like the original 303 and can be used to control other synthesizers via any of its various output formats. 128 banks of track memory and 64 banks of pattern memory are stored in onboard EEPROM, no battery-backup is needed!
Computer Controlled

Plug this baby into your computer, using a standard USB port. Our Java software will control the x0xb0x, or let you save/edit stored patterns and tracks in the onboard memory.

Input/Output

x0xb0x has all the I/O you could ever need:

• MIDI in, out, and thru
• DIN Sync (in or out, selectable)
• CV and Gate (1/8" jacks)
• Audio: headphone, mix-in and line-level out (1/4" jacks)
• USB for computer interface & control

Extras

We added a couple extra modes to make the x0xb0x more fun than the rest

• Random mode: fill a pattern bank with random notes, or have it just play random notes
• Keyboard mode: just like those casios you had as a kid. Press the keys and sound comes out!
• Rotary encoder tempo knob: for finer control over the tempo, or you can set the tempo via computer control mode
• Firmware upgradable: the C code is written for AVR-gcc, any Mac/Linux/Windows computer can be used to recompile new code for the x0xb0x. Reprogram using the x0xb0x software with USB. Mess something up? You can always revert back to the original firmware.