Ladyada x0xb0x

Mode Machines x0xb0x Image

Mode Machines x0xb0x

The x0xb0x, pronounced "zox--box", is one of numerous wannabe clones of the famous acid giant, the Roland TB-303. The x0xb0x however, is better than so many of its competitors. Originally, and currently, sold as a DIY kit by Ladyada, the x0xb0x began life as a graduate student's quest for the perfect TB-303 sound. Ladyada reverse engineered a real TB-303, part by part, and designed a clone that sounds very nearly identical to the TB-303. The kits are extremely popular, so you can expect to wait for some time on their waiting list before one becomes available for sale. Third party companies have also sprung up that offer pre-built x0xb0x synths, the most popular of which is Mode Machines in Germany.

The x0xb0x panel looks pretty much like what you'll find on a TB-303. Emulation is the sincerest form of flattery, and the x0xb0x is trying hard to flatter, but with some modernizations. The x0xb0x is a monophonic synthesizer that you can control via MIDI just like a regular monophonic synth. It also has the requisite sequencer that arranges notes into patterns, and patterns into tracks for a song. Patterns can be synced to MIDI, DINSYNC, and CV. You can also enter the tempo by using tap-tempo. Track play can also sync in a similar fashion. And the x0xb0x can also send sync information to a MIDI sequencer or even an old analog.

The x0xb0x has a USB jack that be used to connect it to a computer for updating the firmware and operating system, external control, as well as using it with third party software tools.

Ladyada x0xb0x Image

Ladyada x0xb0x (first release candidate)

If you are interested in building your own x0xb0x, be prepared to build a fairly advanced electronics project. This is not a beginner's project, but if you have some soldering experience and feel safe around electricity, you can probably build one successfully. You can order the x0xb0x with or without the miniature surface-mount USB jack and chip pre-soldered (it is advisable to pay for this option). And of course, you can customize the machine to your heart's content. There are many sites on the internet that showcase various x0xb0x customizations. You can also find third party companies that sell custom panels for x0xb0x builders.

Lookup Ladyada x0xb0x Prices

The link above will take you to an eBay search for this synth to see active listings with more images, specs and information. If you don't find it there, try looking in our forum marketplace. Our marketplace gets thousands of visits every week so make sure to check back often if you want to buy or sell a synth.

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Are you looking to buy or sell a Ladyada x0xb0x? Post an ad in Gear For Sale or a request in Gear Wanted. For spare parts and repair services check out Gear Services & Other Goods. Our forums also has a Buyer’s Guide section where you can ask for advice on buying synthesizers.

17 Visitor comments
White Mike
June 1, 2012 @ 8:53 pm
Oh Loopy, your opinions are just that. Clearly you know nothing about the Mode Machines variant... Some of your preferred vendors have turend out plenty of turkeys.
Still you keep spreading those unfounded myths.
May 31, 2012 @ 9:32 am
@ cxs303 you´re right the first series of xoxbox sounds different like today.
April 1, 2012 @ 11:08 am
These can be the 100% perfect clone. Or they can be a real P.O.S.
A lot of people took Adafruits ball and ran with it. And they now make their own cheaply produced clone of a clone using substandard parts.
Get one from a reputable supplier and you'll be very happy with it. The cheap rubbish from ModeMachines and TechnologyTransplant are best avoided.
Willzyx, x0xsh0p, TheBeast and x0xsource are known good x0xb0x suppliers these days.
With midi, usb, more pattern space and a better sequencer, they are like a TB 303 MK II. I love mine! No need to pay over the odds for an original anymore.
Big Chris
March 30, 2012 @ 8:21 am
Judging by the comments about other suppliers, I'm glad I got my x0x from x0xsource in the States. Build quality looks good, and it sounds exactly how I imagine a real 303 would sound. Comparing the manuals for the x0x and the real 303, I much prefer the step programming technique on the x0x. The chain mode is great, and I usually record a patterns, chain them together to get multi-bar patterns, then record them down to my multi-track sequencer. It's a great scratch pad for bass and squiggly lead lines - I just wish it could run off batteries so I can use it on the train to and from work!
December 12, 2011 @ 10:27 pm
I'm thinking of buying one. But I think I will study more electronics, and buy the kit. It's cooler.
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User Rating

Rated 4.01 (161 Votes)

  • Check Price
  • The link above will take you to an eBay search for this synth to see active listings. If you don't find it there, try looking in our forum marketplace or post a wanted classified.
  • Specifications
  • Polyphony - Monophonic
  • Multitimbral - 1 part
  • Oscillators - 1 VCO
  • Waveforms - saw, square
  • Filter - 18 dB/oct analog low pass
  • Envelope - Control pots for Decay time and Accent intensity
  • Effects - None
  • Sequencer - 1-Track
  • Patterns - 64 banks of user patterns
  • Songs - 128 banks user tracks
  • Keyboard - None
  • Memory - No sound patch memory
  • Control - MIDI In/Out, DINSYNC, CV, Gate, USB
  • Date Produced - 2006-present

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