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 (ok its actually a little easier, we think) 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!

Extended information

100 b0xes of x0xb0x on the wall - x0xb0x is available as a kit that includes all parts necessary to build a x0xbox: PCB, case with CNC machined faceplate, components, buttons and knobs, AC adaptor, pre-programmed microcontroller, and (of course) poorly xeroxed assembly manual...You supply the sweat & tears.

Case in Point

We tried a bunch of cases until we found one that we felt would be durable yet stylish. The x0xb0x has two CNC machined aluminium face places that fit into a reclosable ABS 'console' box. The top plate is also silkscreened. The x0xb0x is portable, but large enough for users to hack their own modifications in. We tried to put it in an altoids tin, no really, but it just wouldn't fit.
Engineered for Quality

We have two--count 'em, two--analog electrical engineers with too much time on their hands working on this project. An original TB-303 was diassembled and reverse-engineered to verify the schematic. The original transistors were analysed using big expensive curve-tracers to determine their characteristics. We measured every waveform and counted every cycle to give you the best sound...its just like the original because it IS the original.

We tweaked our design until they sounded exactly the same
Obsessive-compulsive? Well he is German

Our crazy German engineer obsessed over EVERY GODDAMN THING in this synth to make sure it was perfect. We sourced all of the original transistors and op-amps, even though it took months of harrassing people on the phone. Just deciding on which potentiometers to go with took three solid weeks of searching through catalogs. (Its a good thing he's unemployed or he would have been fired for not leaving the house.)

It took us 6 months, but we tracked down the original transistors: 2SK30A JFET, 2SC536F NPN, 2SA733P PNP, 2SC2291 & 2SC1583 matched pairs, LA4140 (the original headphone amp), BA6110 (equivalent to BA662) OTA, AN6562 (original op-amp)

Technical specifications

No less than 40 LEDs adorn the x0xb0x.

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

DC Jack, Headphone, CV, Gate, USB, Mix-in, MIDI jacks, Line out, DIN Sync (shown w/clear acrylic panel. kit panel will be aluminium!)
Extras

xoxbox 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.