A Note From x0xi0

x0xi0 sells mod kits for x0xb0x. The following is a note from creator Brian Castro. Apparently there are knock offs of the x0xi0 box out there and Brian has been receiving support requests for them. Moving forward x0xi0 will only be offering support for kits purchased directly from their site.

via Brian of x0xi0
(thread on adafruit):

"I have been receiving requests for service on numerous of these synths that aren't mine. As I've mentioned, I have no problem with someone integrating my original published circuit designs into their product, but it should be clearly noted that these are not x0xi0's. It took me several years design and refine this product, and several years to build the brand reputation. I design pro audio electronics as a sole source of income. I have retail products coming in 2012 that are based on my x0xi0 designs.

The reputation of my companies is already taking a hit from these products that are not mine. I take pride in the quality of my kits and retail product and I am proud that they are designed and built in the USA using local vendors and only the best quality parts.

More so, I have been holding back the release of new product simply out of respect of those who are waiting for completed documentation for the x0xi0 custom build kits, and here we have someone trying to copy the design for which there isn't even a completed owners manual... then they get sent to me for support."


This bottom pic is the fake x0xi0.

x0xi0 synthesizer SN SN x0xi0100B Reference Unit for Auction

Note: Auction links are affiliate links for which the site may be compensated.
via this auction

Click the pics for the super size shots. According to Lorne Hammond at the MMTA Summer SYNTHFEST, this is the x0xi0 to have.

"If not familiar with the x0xi0 or x0xb0x in general check out the x0xi0 website This x0xi0 is one of the reference units of this design of the x0xi0 kits. This unit was built using the custom x0xb0x and x0xi0 PCB assemblies and is equivalent to the x0xi0 Complete kit shown on the website. The unit is updated to the latest specifications. In addition to the normally specified parts this unit also uses the same Sanyo green polyester caps and Chemi-con SM-series electrolytic caps as the original TB-303. This unit is one of the standard reference units that was used for comparison for the testing of other kits. It was also used for the majority of the 2010 sound demos on the x0xi0 website. The functional and cosmetic condition is exactly as new. The item will come with the appropriate power supply for the location of the winning bidder."

Pics of the inside below.

See the seller's other items for more.

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x0xb0x w/ x0xi0 Mod

images via this auction.

Note this is the same modded x0xb0x from this video.

"x0xb0x with custom x0xi0 mod. The unit is brand new, built specifically to sell on Ebay. The kit is professionally built, tested and calibrated. I am the guy who makes and sells the x0xi0 kits. This kit is serial #006. There are currently 50 kits that have been sold. I have taken several hi-res pictures during the assembly of this box to demonstrate the build quality. I have also added a video clip and a few audio samples to demonstrate that the box works perfectly and sounds great.
---------------------------------------------------------------------------
If you are bidding I'm sure you know with this is. For more info check out
x0xb0x Main page
x0xb0x Forum

Specific details of this x0xb0x:
1. Hand selected 2SA733P transistors for high Beta
2. Hand selected VCA for low dc offset
3. High quality sockets for relevant IC's
4. Latest OS v1.05
5. USB tested
---------------------------------------------------------------------------
Details of x0xi0 mod:
x0xi0 Website
x0xb0x Forum Main x0xi0 Thread
x0xi0 I/O & Overdrive Users Manual
x0xi0 I/O & Overdrive Install Manual

New Controls:
Overdrive On/Off Switch
Overdrive Type Switch
Overdrive Amount Switch
Overdrive Tone
Overdrive Low Freq Switch
Cutoff Hi Range Switch
VCA On Switch
Power Switch

New Inputs/Outputs:
Gate In
CV In
Accent In
Slide In

Filter Mod CV In
Accent Sweep CV Out
VCO Out
VCF In
VCF Out
VCA In
VCO FM In



SAMPLES
Random & Keyboard Mode
Basic Pattern
Overdrive
External CV & Gate control
VCF Input
VCO Frequency Modulation"

Unique Modded x0xb0x based on x0xi0 Mods

via Philippe on the AH list. Note this one is for sale. This is based on the x0xi0 mods, but uses a new PCB. Think heavily xoxio modded x0xb0x modded even further. via Philippe: "It is just a x0xi0 only mounted on a single board, and therefore with a slightly different front panel. But still an exact x0xi0 only wih the few additions and substractions.

"A short introduction to the x0xi0 could be as follows :
It's a x0xb0x with close to 100 (!) additional features, the main ones being :
2 oscillators (instead of 1), 1 noise source, 1 additional envelope, Xmod between oscillators, VCO FM, distortion output, overdrive, etc, etc... the full x0xi0 additional features are described here.

Yet mine is probably the most advanced x0xb0x on the market as in addition to the long list of new features a x0xi0 has, this one has the following extra features:
Li-ion accu charge (you can play the x0xi0 without power supply for about 2 hours)
Overdrive input
Overdrive output
Delay input
Delay output
Filter hi-range switch
Delay time
Delay amount
VCO2 CV In
Slide Out

to make room for these some of the original features which seemed less important had to be taken away:
Gate On LED
Accent Decay LED
Env Decay LED
Hi Resonance LED
Cutoff Hi Range LED
Overdrive Low Freq Switch
Overdrive Type Switch

Sold with a USB cable and its 220volts power supply.

Located in France.
Looking for convincing offers since it is hard to define a price for this extremely rare synth.

Email me off list for pictures and additional infos...

Thanks for reading,
Philippe"
nuipb at hotmail.com

x0xi0 vs TB-303 (x0xb0x)

YouTube via bcastromusic | June 28, 2010 | 7:50

"A/B comparison of x0xi0 versus Roland TB-303.
2nd half of video shows x0xi0 diverging from standard 303 sound.
sorry, no HD, sound quality is bad for a comparison.
Go here for hires audio version: http://alphazone1.com/x0xi0/web_downl...

All sounds are realtime from the x0xi0 (and the TB-303), no external effects or processing.
For more information goto: http://alphazone1.com/x0xi0/"

x0xi0 x0xb0x mod kit - Update

Remember this majorly modded x0xbox? Brian wrote in to let me know the Rear panel mod is now available. Details from Brian:

Inputs & Outputs:
Gate In
CV In
Accent In
Slide In
Accent Out
Filter CV In
Accent Sweep Out
VCO Out
VCF In
VCF Out
VCA In
VCO FM In

Overdrive:
On/Off
Type (overdrive or distortion)
Amount
Tone
Low Freq

Other Features:
Power Switch
Extended Bass response
Extended VCF Range
Extended Env Mod Range

x0xi0 I/O & Overdrive Users Manual
x0xi0 I/O & Overdrive Install Manual

Download the manuals for all the details.

Click here to go to the x0xb0xmod myspace page for blog & more details.

The price is $130 + postage.

Contact Brian @ bcastro[at]harman.com to purchase.

The full x0xi0 kit including the Top panel mods is still being completed. The x0xi0 I/O & Overdrive kit is simply the name for what is essentially the Rear panel mods. The kit has been designed so you can easily upgrade to the full kit when it is available."
Be sure to check out the prior post for a video.

x0xi0 without effect enabled

YouTube via TheAnalogLover
"In that video you can see and listen a x0xb0x with x0xi0 full mod of Brian Castro. I havn't used overdrive or distorsion in that sequence."

x0xi0 with effects On

"Second part of x0xi0 full mod test with effects avtivated ! Distorsion and after overdrive."

Red x0xb0x stock.


x0xb0x x0xi0 Mod Kit of Brian Castro. Overdrive/Distorsion + 10 Inputs/outputs :-)

x0xi0 Synthesizer Rev B

Note: Auction links are affiliate links for which the site may be compensated.

via this auction

"This auction features the x0xi0 Synthesizer Rev B. It’s in excellent cosmetic condition and working condition, it’s practically brand new. I’m the original owner, it’s never been gigged and has never moved from my smoke-free studio. If you’re looking for the classic 303 sound plus additional capabilities only found in the devilfish, then look no further...

Included in the auction is the x0xi0 Synthesizer Rev B, power cable, original documentation and packing materials. This unit will be packed professionally. Please review my feedback record (100%!!!) and bid with confidence.

Auction includes:
• x0xi0 Synthesizer Rev B
• Power cable
• Original documentation
• Original packing materials"

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Waveform City Brian Castro of x0xi0.com

Waveform City Brian Castro by waveform city
"The website for the x0xi0 instruments and DIY kits is x0xi0.com The website for the new company is abstraktinstruments.com (it's currently is mirror of x0xi0.com The blog for my synth tech work is bcaudio.tumblr.com The site for my music is soundcloud/briancastro"

via waveform city where you'll find more interviews.

Brian Castro - So We Are

Uploaded by bcastromusic on Mar 2, 2012

"Demo in progress
uses x0xi0 synthesizer for lead.

http://soundcloud.com/briancastro
http://myspace.com/briancastro2
http://x0xi0.com
http://bcaudio.tumblr.com
http://www.linkedin.com/in/briancastro"

x0xb0x x0xi0 custom maiboard test

YouTube via bcastromusic — April 01, 2010 — testing new x0xb0 mainboard for use with x0xi0 mod kits.

2010-11-14 Cannibalistic Frequencies

YouTube Uploaded by KeepUpOnIt on Mar 21, 2011

"Famous Tinky-Winky-Acid-Patterns in beaver style part2 - unmasteredovermixed (TM)

Guess the famous pattern which was used on the x0xi0 - you should be able to guess it around 04:30

This is 11m one single pattern, so consider it as boring and just a demonstration of the incredible capabilities of the x0xi0-mod sounds, especially the overdrive mod. I do especially like how it's crying at 10:00 ++

I did this at the end of last year but was never really happy with it. On one hand I had a take2 on my todo-list for 16 weeks now and its time to scratch stuff - on the other hand I felt like I should upload something new here - so here we go with take1. If it hurts and your ears start bleeding because you're missing things like a compressor - just watch other glossy stuff from glossy people. Otherwise turn the volume up and undergo the sweetness of clipping!

Thanks for watching!"

x0b0x w/ x0xi0 mod #006

YouTube via bcastromusic "x0xb0x with x0xi0 I/O & Overdrive Mod"
Update: this is up for auction here.

Red x0xb0x witk x0xi0 kit !!

Red x0xb0x witk x0xi0 kit !! from ZoBI on Vimeo.

x0xi0 modded x0xb0x - first test (no line, just phone audio)

YouTube via KeepUpOnIt | July 04, 2010

"I just got my long awaited x0xi0 full modded x0xb0x (no, I didn't built it myself, thank you Brian Castro, fantastic Job!)

This is the first test and I was not very patient so I did not hook it up to an audio port of my soundcard but just attached the monitors directly and run the xBase09 though audio in of the x0xb0x. It was such a nice first-try-extreme-fun-session with this bassmonster that I had to record it quick and dirty (TM). Don't expect line sound, its just recorded with my phone!

As usual - if you don't like it, please tell your mom and watch other stuff, otherwise leave a comment!"

x0xi0

x0xi0

A new x0xb0x Website

ACID

via Steve

Top: ladyada kit #345 with the kit #100 of the x0xi0
Middle: 303
Bottom: ladyada kit #289 with the happy faces

click the image for the full size shot.

more pics here

Click here for all posts mentioning the x0xi0 including video.

x0xb0x x0xi0 Full Mod 2

YouTube via bcastromusic
"Demonstration of x0xi0 Full mod.
This is a basic pattern using two VCO's and noise source. Also, filter tracking, Envelope 2 routed to the VCA and VCF, and to VCO2 as well at one point. I'm also adjusting the VCA envelope parameters. The dedicated VCA envelope, ENV2, and the Accent sweep can all affect the VCA simulateneously - this is where all those syncopated sounds are coming from... where all VCA control sources mix and match to shape the volume.

The row of four controls at the bottom right is the VCA envelope, A - D - S - R
the row of four knobs above that is Envelope2 (ENV2 for short). The first two controls are Attack and Decay/Release. The switch below the second control is the Decay/Release mode switch. The 3rd control in that row is the ENV2 depth amount control. This determines how much ENV2 is sent to the VCA or VCO. The switch below the control allows you to select VCA or VCO as destination. The fourth control in that row is the ENV2 to VCF Depth control. It determines the amount that ENV2 effects cutoff frequency. The slide switch below the knob is the ENV2 invert switch which inverts the envelope shape.

The filter tracking control is the one just to right of the bank knob. The noise source level control is the one to the left and above the tempo knob.

I'm also using the Gate on switchs with the gate on modes. There is a gate on mode that leaves the gate open and only re-triggers the filter envelope and the new ENV manual by pressing that push-button on the lower right. The is a second gate-on mode that leaves the gate open but allows the normal filter envelope to retrigger with each note but not ENV2. In this case ENV2 can only be triggered manually, which is what you see me doing when I press that button at the lower right."

2010-02-28 Minimal Acid Jam (Dual-Vco-x0xb0x, DSI Evolver, Jomox 888)

YouTube via KeepUpOnIt | September 09, 2010

"This is a very minimalistic test of the x0xb0x VCO2 mod I installed in February.
Up to 02:15 VCO1 only, afterwards VCO+VCO2, at 03:55 some VCO2 detuning.

If you like it or have questions, leave a comment or write a message to make me happy, if you don't like it - make sure to check out Zx7XcExWFno and help to protect the forest to make the beavers happy."

2010-08-14 Voltage Magic (x0xi0-x0xb0x VCO1+2 X-MOD Testing)

KeepUpOnIt | September 09, 2010

"Another very minimalistic video, just demonstrating the VCO1+VCO2 crossmodulation sound of the x0xi0 x0xb0x mod. Its so warm, I really like it. This is not a sequence, as you can see - the "gate on" switch on the left side is on and so gate is never released, which does cause this permanent sound. Some Jomox 888 sounds by gestures (not working correctly yet)

- Up to 00:30 VCO2 only, no xmod
- 00:30 VCO2 only, modulated by VCO1 a bit
- 00:56 VCO2 only, modulated by VCO1 a bit more
- 02:16 VCO2 only, modulated by VCO1 even a bit more
- 02:24 tuning VCO1 down and turning cross modulation off again
- 02:43 tuning VCO2 up
- 03:41 reversing x-mod from initial "VCO1 modulates VCO2" to "VCO2 modulates VCO1"
- 03:44 turning VCO2 volume up, you hear VCO1 + VCO2 parallel, no X-MOD
- 03:56 VCO1+VCO2 parallel, turning up VCO2 modulates VCO1 X-MOD

Listen loud, don't forget to turn bass up. If you don't like it, its not my fault, its the fault of a Beaver! If you like it or have questions - leave a comment or write a message. Bless the Voltage!"

x0xi0 bass synth sequencer Brian Castro calibrated x0xb0x modded tb-303 clone

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via this auction

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