x0xb0x

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"The x0xb0x is an open-source remake of the legendary Roland TB-303 analog synthesizer. This is a brand new synthesizer with non-pull components, yet its design has been fine-tuned by scores of analog enthusiasts to match the original device in every quiver. In fact in many ways it surpasses it, as it possesses modern ports like MIDI and USB.

What does it mean that the x0xb0x is open-source? It means people contributed their love and passion in creating the blueprints and have released them for everyone to see, to modify, and to reproduce. Open-source engineering leads to superior products that have fewer flaws. It is also an expression of freedom, with a capital F. I'll tell you, your hippie mom will be proud. Visit their site here.

This reification of those blueprints is true to them. No analog component has been been substituted. The rare, critical parts have been imported from England to create an uncompromised sound. Scores of enthusiasts have sought these same parts as a DIY kit, waited months for their turn on the waitlist, spent hours sorting through the five hundred components, learned to solder for their very first time, and carefully calibrated their creations through make-shift sound card scopes, hoping it would work, hoping to relive the groundbreaking sound of the TB-303. They experienced the passion, but you can save yourself the headache.

This x0xb0x has been assembled by an experienced builder and calibrated with a LeCroy 9310AL digital oscillloscope. Its sound was A/B compared to a working x0xb0x to make sure nothing was amiss."

Features:
* Pure analog voice circuitry
* Critical analog components including:
o 2SC1583, 2SC2291, 2SC945P transistors
o 2SK30AO and 2SK30AY JFETs
o AN6562 and BA6110 Op-Amps
o LA4140 Power Amplifier
o 1% Thin-film resistors
* Calibrated with high-end oscilloscope
* High-quality Lexan overlay
* Clear back panel
* Un-modded (original sound)
* Contact us for x0xio I/O and Overdrive kit
* Other features:
o MIDI Play
o PC hookup (software included)
o EEPROM for 128 banks of track memory/64 banks of pattern memory
o Computer download and upload of saved tracks/patterns
o Upgradeable firmware (preloaded latest v1.05. Will be upgraded to sokkos at customer's request)

Input/Output:
* DINSYNC (in/out)
* MIDI-in
* MIDI-out
* MIDI-thru
* CV (⅛")
* Gate (⅛")
* MIX-in (¼")
* Headphone (¼")
* Line-level out (¼")
* USB for computer interface & control