via this auction
"This is a premiere example of a vintage Oberheim OB-8 synthesizer. It is cosmetically and functionally in great condition, and features a few custom mods that you will not find on any other vintage Oberheims for sale. It also comes with the original owner's manual, a super heavy-duty custom transport case, and a custom dust cover. I will list all of the details below:
Modifications (Please check out demo video I have attached to this listing):
This OB-8 has had some truly one-of-a-kind modifications done to it. They were done by the previous owner in between 2013-2016, but fortunately he gave me some of the original receipts for the work, which was done by two well established companies at the time -"Retro Linear" and "New England Analog". For all of the purists out there who cringe at the sight of any mods being done to a classic synth like this, this may not be the synth for you... but I personally found that these mods take the playing experience of this OB-8 to another level.
The first mod done was replacing the original keys with a Fatar keybed. This keybed plays extremely smoothly and effectively - it is quite easy to do runs up and down, and the keys are also not clicky and operate quietly.
On top of this, a very unique mod called "Pyxis Aftertouch" was installed which adds aftertouch to the fatar keybed! This aftertouch is routed to a very ingenious system that plugs into the back of the OB-8 via two small jacks. The system allows you to control various parameters of the aftertouch such as LFO speed & wave shape, filter cutoff, VCA settings like volume or tremolo, & more. This aftertouch system has a main module with knobs/switches for adjusting these parameters, and there is also a second touchpad module you can use to trigger these parameters. I showed examples of using this aftertouch mod in the demo video I included in this listing. You can see me using the aftertouch to trigger an increase in LFO speed/intensity at 0:21 and 0:55. At around 2:10 I demonstrate the aftertouch in combination with the portamento (which is an amazing feature of the OB-8). It can get a little wild sounding (2:12) if the portamento is a slow build ! At around 3:00, I use the touchpad module, which does the same thing as the keyboard aftertouch.
