Oberheim OB-8

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video upload by bcastromusic

via this auction

Pics of the inside below.

"OB-8 from our collection in excellent condition. The synth has been extremely well cared for and maintained. There are numerous pictures included - including closeups showing any scratches & imperfections on the unit.

January 1984 Build - Serial Number 034227
Latest Firmware B5 w/ Factory MIDI
All ECO's completed - It's a late build so only ECO's #440 & #441 needed to be completed
Bender board replaced w/ our custom assembly (original part included in sale)
All electrolytic capacitors replaced. Main PSU filter caps replaced w/ Mallory parts. All other supply voltage related caps replaced w/ premium Panasonic FC & Nichicon UPW-series 105c parts. All audio capacitors replaced w/ Panasonic ECA-series parts.
All Op amps replaced w/ new Texas Instruments parts.
All TTL & CMOS IC's replaced w/ new Texas Instruments parts.
All audio jacks replaced w/ new Amphenol parts.
All new molex headers.
All zinc-plated hardware replaced w/ 18-8 stainless steel parts (nuts, washers, screws etc..) .
All aluminum standoffs replaced. Hinged standoffs replaced.
End panel screws & washers replaced w/ new parts.
Panasonic keybed cleaned.
Bender board collet knobs replaced w/ brand new Elma parts.
Rubber feet still intact (they used a stick-on door stop for feet and they are often missing)."

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x0xb0x

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Published on Oct 15, 2012 by bcastromusic

via this auction

"The specific features of this x0xb0x are as follows:

Hand built using original TB-303 transistors including 2SC536F, 2SA733P, 2SK30A(O), 2SK30A(Y), 2SC1583 & 2SC2291.
Built using all original specified parts as described in the Parts List on the Adafruit website.
Front and rear panel purchased from official x0xb0x supplier Willzyx.
Pre-loaded with SokkOS 1.9.1 firmware.
Available with US/Canada/Japan 110V or Europlug Type C 220V power supply."

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Roland Juno 6 Demo

YouTube Published on May 11, 2012 by bcastromusic

"Select 720p/1080p HD for best sound quality.

The Juno 6/60 is a popular synth that is the subject of a lot of discussion, and much of it is negative. I am a huge fan of the Juno 6/60 and think it gets and unfair amount of criticism, primarily behind the veil of the internet. This demo showcases its amazing sound and some of it's capabilities.

Below is the link to the original uncompressed demo:
http://soundcloud.com/briancastro/roland-juno-6"

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"

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/"

x0xb0x x0xi0 - painting pointer lines on 9mm potentiometers

YouTube via bcastromusic — May 23, 2010 — no description available

x0xb0x x0xi0 custom maiboard test

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

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."

x0b0x w/ x0xi0 mod #006

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