OBERHEIM OB-1

images at this auction
"# 2 VCOs with sub-oscillator each (!). Like on the SEM you've got Saw and Pulse. But there's one interesting new feature: there's a smooth running control knob that moves either from sawtooth to sine or from narrow to broad pulse.. This is quite unusual, and even voltage control of the oscillator waveform is possible... quite good, really! Especially those nice sound between saw and sine are very interesting and not to be found on too many other synths (except multimoog, kobol and some other unusual instruments)
# 1 VCF... very powerful. Sadly it's not the multimode-filter of the SEM... what a shame...
# 2 fully equipped ENVs... without any extraordinary feature, but: just simple and easy to use, and sonically perfect...
# 1 LFO with sine, pulse and S/H
# noise
# very useful controls to the left of the keyboard
# 8 memories"

ROLAND TB-303 with Midi Sync Box

images at this auction
"Also including in this auction is a custom made 1 MIDI in to 2 SYNC out (1X2) Sync Box (with power adapter). This tiny little magic box let's you Sync not just one classic Sync instrument.. BUT TWO AT ONCE! Meaning you can Sync both a TB-303 and TR-606 (or MC-202, SH-101 and many other vintage pre-MIDI pieces) to any modern MIDI device. From a Groovebox to a ProTools or Reason rig, you will be able to use this amazing classic with any and ALL of your present gear."

Roland SH-101 with Mods

via this auction

"It has 2 awesome cutom mods, courtesy of world famous Mark Verbose. Please watch these 2 short videos for demonstration. This is one of a few SH101s used live by my group Prototype 909 in our recent tour of the US."

Vintage Synthesizer

YouTube via kennykeyboard
"Polymoogs were looked down upon since the Minimoog was so well received that the polyphonic machine to bear the Moog name wasn't up to the hype. It did have an aural edge over the other string synths that had similar technology. Mine like most was broken in some way. Here I do some sloppy improv and holiday tunes."

Vintage Synthesizer OB4v

YouTube via kennykeyboard
"Similar to the other video of the same synth except this time from atop. THis has been dubbed from an 8mm tape done in December 1998. Christmas tune"

Ensoniq SQ-80 Demo

YouTube via derekaggs11
"A very brief demo of the SQ-80's onboard 8 track sequencer. I slapped together this short song only a day after getting the synth so don't expect too much yet. The audio is recorded by holding an iPod earbud up to my PowerShot's microphone - it sounds much better in person." sorry. :)

YM2612 Circuit - C4 Scale

YouTube via TasuLife
"The Yamaha YM2612 is the sound chip
found in the Sega Genesis console. Here it is in a circuit I built playing a C4 Scale in the "Grand Piano" test voice described in the infamous SEGA2.DOC
http://www.smspower.org/maxim/docs/ym...

The NoteON function calls take integers in the Midi NoteOn format.
(C4 is 60,C# is 61, A4 is 69, etc)
It takes this number and decodes it into the YM2612's wacky 11bit FNumber and 3 bit block automatically."

AH Bay Area 10.25.08 via Kwote

You can find images on Kwotemusic.

Tangent Tutorials - Soldering Techniques and More

People on the SDIY list seem to like the tutorials on this page.

Oh, the bending you could do with this...

バンダイ　『ツッツキバコ』　動画

YouTube via MOCOMOCOMICHI

via Califaudio where you'll find more info on this one.

retrosynth ghett-o-scope

This one from Page 2 of David's AHBA set. Remember to check out the shots in detail.