“This one is in good cosmetic condition and working 100%. This is for the synth only and not the keyboard. It has been professionally serviced and with a lot of restoration by Phil Cirocco of CMS. As some of you know, Phil is highly respected and is the premiere ARP specialist. This ARP 2600 is a V3.0 made on the 23rd week (June) of 1973. It has some unusual markings for V3. As you can see, it has the G-Clef sticker, but with the Tonus logo Silkscreen. It has the 15.5″ panel which is correct for a V3.0, but has the squared speaker grille instead of the oval. All of this is cosmetic, however. It will be properly packaged when sold and will arrive in the condition as stated. Proof of the actual shipping cost will be provided if needed. This unit is listed as a USA sale only, but I am willing to ship to other countries. Not sold as-is!” Click here to visit listing on eBay
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ARP 2600
“The original ARP 2600, made 1970s. Same owner since 1981. Carefully kept, professionally refurbished in the UK including replacement of keyboard bushings.” 
“Retro Gear Shop is a high-end boutique store located in Nashville, Tennessee.
“I purchased this 23 years ago as an investment.When I received it was fully functional and I was able to nail a bass patch that sounded every bit as powerful as any Moog I’ve ever heard.After a year it stopped functioning and I Opened it up and noticed the filter was potted with epoxy to safeguard anyone copying the circuit but also prevents service.I packed it back up and it has been in storage until now.I was considering sending it to discrete synthesizers (CMS) for service but there are quite a few options that would improve upon the existing instrument but I should leave that up to the end user how it should be hot-rodded.This synthesizer will always be worth more than the current Korg or Behringer knock offs because this ARP is 48 years old and is a collector item.I am selling this synth as is, untested but it does turn on and I was able to get a droning sound pitch tracked using the keyboard.” 
“Beautiful Arp 2600 that has been in storage for a long, long time. It is intact-all slider caps are in place as you can see as well as all jacks and switches. There were some professional modifications done by the previous owner (switches/jacks at ADSR and switches on 3620 kybd, and a pot above the kybd CV in the filter section- see pics). I never took the time to determine what the mods did, but you can surmise. I turned it on about 2 months ago, and all three oscillators were working, however after literally sitting for years (it has been more than a decade), it’s going to need a thorough going over by a specialist. If I were the buyer, that would be the first on the list- have it completely gone through, cleaned and brought to spec. If you’re gonna invest in one of these, this one is worthy of your consideration mainly because it’s a very clean unit (no signs of any physical or psychological abuse)! ” 
“ALL GEAR IS TESTED AND GUARANTEED TO BE 100%
“Untested and being sold as is for parts or repair.
“Untested and being sold as is for parts or repair.
“This is a rare ARP 2601 V3.0 2601-0721 vintage synthesizer with orange lettering. This synthesizer was originally used at a local college and was very well taken care of. It received a face lift by Phil Cirocco which included a rebuild power supply, repaired the 4072 filter, replace w/ blk Odyssey type 1, replace washers and cleaned nuts, front panel restoration, cleaned and lube sliders, cleaned circuit boards and inside chassis, received a full calibration, and comes with 2 original power cords.
“For yourconsideration is an ARP 2600P (Version 4.0) analog Synthesizer (nokeyboard) for restoration. Judging by the writing on the inside ofthe cabinet near the spring reverb unit are the markings 4P. I haveevery reason to believe that this is the original cabinet which datesthe manufacturing year to be 1974. During this time ARP was using the4012 Low Pass Ladder Filter which was essentially a copy of the Moogdesign. This led to a patent dispute forcing ARP to change their LPFdesign for use in later models. Back in the early 1980’s I designedand built my own analog synths and had an absolute blast using them.Then interests shifted and I moved on to other hobbies. Several yearsago I got the “bug” to get back into analog synths and I acquiredthis 2600 with the intention of restoring it to it’s full beautyafter I retired. During that time I found Synthesizers.com and builta beautiful modular synth I know now I’ll never part with. I’ve beenretired almost 2 ½ years and now that I have my “dream”modular synth I have no motivation to restore the 2600. I would loveto see this instrument go to someone who will bring this classic backto it’s full potential. I never powered up the synthesizer since Ihad it so I don’t know it’s current electrical condition. With thatbeing said the synth should be restored by someone who is experiencedin this type of vintage equipment. The wood cabinet is in good shapebut the tolex covering will need patching or replaced. The frontpanel is also in great shape however please look very closely at thephotos. There are some sliders missing the caps and also some of the stems are broken off flush with the panel. The slider controls willhave to cleaned and possibly replaced. All of the circuit boards,wiring harnesses and the spring reverb assembly are intact. There’sno carrying handle and I have some of the hardware removed to takephotos of the inside of the cabinet which will go back in place. ”
“Born in 1973, this ARP 2600 set is 46 years young. It has the coveted Moog type (4012) ladder filter.
“Arp 2600 semi-modular synthesizer with 3620 keyboard
“ARP 2600 v.2 with 3604P keyboard in GOOD condition, plus manuals and extras.
“ARP 2600 Vintage Synthesizer and 3604P Keyboard (not pictured)
“Refurbished 12 months ago including re-tolexed case.
“Recently (about a month ago) refurbished by one of the best techs in SoCal (Montoya). It was also previously professionally maintained when I lived up north, about 4 years ago (Siegenthaler). Many 2600s are electronically flaky, and most of any of the keyboards are internally a wreck — but not this pairing. They are electronically in excellent shape, and also are in fairly good shape cosmetically.”
” For sale is an Arp 2600 synthesizer along with a 3604P keyboard that is well used and working (mostly), it makes plenty of great noise but needs service to be back to it’s best condition. Known issues are as follows; both lids are missing, numerous broken sliders, oscillator 3 not working, some jacks are intermittent, audio/lf switch on oscillator 2 is intermittent. Power and keyboard cable are included, piece will be well packed for it’s journey to it’s new home or can be picked up near downtown Los Angeles. This synth is being sold as is with no returns.”
“Very good condition, with some wear as expected for its age but overall still nice shape. Most of the wear is on the outside tolex, the front panel face and keyboard itself are in great shape. Includes both lids to unit and keyboard along with keyboard connecting cable. Recently fully serviced by professional tech. We’ve had many 2600s pass through our shop over the years and we found this particular unit to sound fantastic. It’s 100% fully functional, except for 2 small issues worth mentioning: one slider shaft has a broken tip (in Voltage Processor section, probably the least used part of the synth and you still have 2 other working Voltage Processors), and the keyboard input jack to VCO3 is hardwired to receive voltage from the keyboard (jack will not bypass the keyboard input). Other than these two issues the unit is working as it should. At some point this was modified to accept standard 3-prong cable instead of the unusual oval shaped cable they original came with. ”
“Refurbished 12 months ago including retolexed case. Good working order has been used very little since the service. Superb sounding and increasingly rare instrument. Excellent sounding reverb and ring modulator. As used by Todd Terje, hot chip, etc etc etc etc ”