“Here is my ARP QUADRA Synthesiser built in the 1980’s and used by such bands as Genesis etc.,
It’s in fabulous cosmetic condition both internally and externally – as can see from the photographs and appears to have been very well maintained.
It was until recently owned by a well known Rock musician as a studio instrument but I cannot give you any more information I’m afraid – as my lips are sealed !
All appears to be working with the exception of one key – which is not responsive, I have however, been informed that it is likely to be a carbon build up on the contacts, however I am personally not going to attempt this as I do not have the necessary skill set.
Please contact me in the first instance to arrange a viewing and check for yourself that this is fully functioning and if you’re happy with it then a BACS transfer or cash transaction can be arranged as NO REFUNDS are offered on this synth.
This could be a great bargain for someone needing this much sought after synth – either as a studio/tour instrument or as an investment opportunity.
I have priced this ARP at what I consider a sensibly low price as I need space in my Studio and to free up monies to purchase a guitar.
Absolutely NO OFFERS as this is a great price for such a sought after vintage synth.
NB: Scammers will be ignored as will time-wasters but genuine enquiries are very welcome to view and test in North Dorset at a mutually agreed time.
As you will see – the Synth comes in a custom made flight case which is in a virtually new condition.
Thank you for looking.” Click here to visit listing on eBay
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ARP Quadra
“This ARP Quadra has just been professionally overhauled by Synthchaser, the foremost expert on ARP Quadras! Work done included new red LED sliders (illumination can be dimmed or disabled by control of a knob mounted just inside the synth), recap of all tantalum and electrolytic capacitors, new touch sensor, keyboard refurbishment, new IC chips, and more reliability enhancements!” 
“Arp Quadra Vintage Analogue Synthesizer plus New BSH Custom Flight Case.
“Vintage ARP Quadra 2463 Synthesizer – **Fully Serviced 2-15-20**
“Due to a non paying bidder, this item is being relisted.
“No shipping – ARP 2463 SYNTHESIZER in untested condition ” 
“For sale is a vintage and rare ARP QUADRA. Cosmetically it’s in very good shape. SEE PHOTOS I think it looks absolutely amazing. The graphics are crisp and very little signs of use all around. There are some areas where the black paint is missing/scratched off along the top back edge where the hinge is. The sides have signs of wear along the edges but are mostly along the back edge. PLEASE SEE PHOTOS FOR CONDITION AND PAINT ISSUES. Functionally there are no known issues with the unit, however I am not an expert. The unit powers on, all keys trigger properly, only the sliders in the Phase Shifter / Output Mixer section have been replaced and do not have the knobs/tops on them. All other sliders and panel switches also appear to work properly. The two sliders in the Porta-Mento section are missing knobs/tops. All the touch switches and LEDS function properly. I have played it out the MONO OUT 1/4″ jack sound output however I have not played it out the other outputs. + owner’s manual”