p6000 “Sequential Circuits Prophet 600 out of a smoke-free studio. Just came back from the shop and it’s in fantastic cosmetic and working condition! Everything works great. Only noticeable issue is the numeric keypad makes a sticking sounds when you press the buttons, but they function fine. Battery was just replaced. Original owner, never toured. Probably about as close to new as you can get. Includes power cable and original box.” Link

Prophet 600, Sequential Circuits @ 09 February 2017, Comments Off

p-600 “This synthesizer is in good used condition, with some scuffs and scratches from previous use. This unit was tested and seems to be working well, but not every single function was tested. The power cable is included. There is some chipping to the wooden body (see detailed photos).” Link

Prophet 600, Sequential Circuits @ 02 February 2017, Comments Off

6 “Prophet 600 analog synthesiser just serviced and in perfect working condition. Only sign of wear on the top corner of the left wood side panel (see picture 6). Comes with switch pedal.

The P600 has two oscillators per voice with sawtooth, triangle and variable pulse waveforms. The oscillators can be individually tuned or synced together. Similar quality VCF and VCA sections from the Prophet 5 can be found here too! The P5′s Poly-Mod section has also been passed onto the P600.

The P600 is extremely versatile and easy to use! Its best functions include the onboard arpeggiator, 2-track sequencer and poly-modulation. The P600 is great for creating analog effects, swells and drones. It has a cool glide effect and has very flexible modulation possibilities.” Link

Prophet 600, Sequential Circuits @ 02 February 2017, Comments Off

p6000 ” This Prophet 600 is in super condition and has recently had a $600 full service performed by the excellent technicians at Switched On, Austin TX. Sounds amazing, plus it has the TEENSY Modification done.

You wont find a better example of this synth anywhere, for its age it is sublime.

Also comes with a professional Clydesdale shipping case.” Link

Prophet 600, Sequential Circuits @ 26 January 2017, Comments Off

600 “I’m selling my beautiful Prophet 600 with the latest firmware update from Gligli and a fresh membrane panel from LA Synth Co (installed 3 months ago).

- Original wood ends have been lightly sanded and finished.
- I will include the original IC with the factory firmware
- Keybed is in pretty good shape, the keyboard bushings were replaced a year ago.” Link

Prophet 600, Sequential Circuits @ 26 January 2017, Comments Off

p600 ” Unit in excellent shape. Plays well hardly no scratches on it. Bought it new in 1983.
Has two minor issues with it as you can see in the invoice worth of over $900 worth of work done on it. The number two on the key pad is not working at the moment so any program with a two in it will not come up. All the other programs plays fine. It also comes with a gator gig bag that it fits in.
Serial # 4631″ Link

Prophet 600, Sequential Circuits @ 19 January 2017, Comments Off

p600 “Amazing Deal!!!!
PROPHET 600 by Sequential Circuits
Original MIDI synthesizer.
Very special synth….
All the keys work. All the oscillators, switches and pots are functional and original. Display functions, front panel button overlay super clean. There is minor damage to one wooden side and one key (middle G) has a small chip missing from the underside (see in picture). Has never been in a smoking studio.” Link

Prophet 600, Sequential Circuits @ 19 January 2017, Comments Off

600 “This Prophet 600 is in super condition and has recently had a $600 full service performed by the excellent technicians at Switched On, Austin TX. Sounds amazing, plus it has the TEENSY Modification done.

You wont find a better example of this synth anywhere, for its age it is sublime.

Also comes with a professional Clydesdale shipping case.

Will ship immediately upon receiving payment.” Link

Prophet 600, Sequential Circuits @ 19 January 2017, Comments Off

p600 “Keypad is functional, but is slightly raised and damaged. Has some cosmetic scuffs and scratches. Sold as-is, as pictured. Includes no additional accessories beyond what is pictured.”
Link

Prophet 600, Sequential Circuits @ 12 January 2017, Comments Off

prophet 6500 “Here is a beautiful and fully operational example of a Sequential Circuits Prophet 600.
This unit has been meticulously serviced and upgraded to bring it to it’s absolute fullest potential.
All of the insides have been perfectly calibrated and tuned. All tantalum capacitors have been changed with high quality electrolytic, a common flaw in all sequential gear. All controls have been cleaned and the membrane pad works perfectly. The keybed, another common ailment of prophet 600′s, has been serviced to ensure it will not loose notes.

The unit features 2 upgrades:
Brand new custom made wood sides
GliGLi CPU modification, which is the mod that makes these prophets scream as loud as it’s older the brother, the prophet 5.” Link

Prophet 600, Sequential Circuits @ 08 December 2016, Comments Off

pro6 “Sequential Prophet 600 with gligli near mint. Here I’m selling a very good cosmetic condition Prophet 600 including the gligli upgrade. It’s fully working with no issues and looks nearly mint. Sounds amazing. box is already sold so only synth now
its the us verions so comes with small converter” Link

Prophet 600, Sequential Circuits @ 13 October 2016, Comments Off

p600 “SEQUENTIAL CIRCUITS PROPHET 600

Fantastic synthesizer which I have owned, used and loved for 5 years. Was recently serviced by an internationally respected synth repairman with a new membrane, repaired ‘B’ oscillator, new knobs for a couple that were missing, new wood plates, etc. My favorite of the synths I’ve owned, but it’s time for me to pass it on to new hands.

Comes with a flight case. $200 already taken care of, so it’ll stay in your wallet!

Buy with confidence! Item sold AS IS!” Link

Prophet 600, Sequential Circuits @ 29 September 2016, Comments Off

used-prophet-600 “Great condition, all ports working, and was recently cleaned and factory patches were restored.” Link

Prophet 600, Sequential Circuits @ 15 September 2016, Comments Off

prophet_600 “An excellent condition, fully functional, all original, Prophet 600.
Plus a rock solid hard case. (Essential if you are taking it out of your studio or for safe shipping!)

I have loved using this synth over the years. Just finished a score with this Prophet all over it. Always inspiring. I hate to let it go but you will love it.

If you are like me you’ll dive into this deep synth and not come up for air for awhile.” Link

Prophet 600, Sequential Circuits @ 08 September 2016, Comments Off

600 “Excellent condition Prophet 600! Recently serviced and fully functional. Sounds amazing! Includes gligli upgrade, and original manual. Will also include original OS chip, in case you want to revert to stock OS. ” Link

Prophet 600, Sequential Circuits @ 01 September 2016, Comments Off

600 “Up for sale is the classic SEQUENTIAL CIRCUITS PROPHET 600 vintage analog synthesizer.

The unit turns on but does not seem to produce any sound as being tested. The display shows up fine, most of the buttons appear to be responding except for #2, TO TAPE, FROM TAPE, TUNE, SEQ 1, SEQ 2 and ARPEG UP-DN buttons not responding when pressed.

So I’m selling this AS IS to be used with some servicing done, or for parts.

Cosmetically the unit is in reasonably nice condition as you can see. There are some wear and scuff marks here and there with some smudge on the keys as pictured, I’m including plenty of pictures so you can see exactly how it looks.

Comes in Original SCI Prophet-600 Hard Case as shown.” Link

Prophet 600, Sequential Circuits @ 25 August 2016, Comments Off

600 “Powers on, and working but, has many dead keys, missing wooden side panels, broken cutoff knob, needs tuning, dead battery and the lower right segment of the first digit on the led display not illuminating (see pictures).” Link

Prophet 600, Sequential Circuits @ 14 July 2016, Comments Off

600 “Up for Sale is a Sequential Circuits Prophet 600 synthesizer from 1982 in perfect working condition. This Synth was just fully serviced by Perfect Circuit Audio in Burbank, California and everything is in 100% working order. All key contacts were repaired, pots cleaned, etc… This is the Dave Smith analog original!” Link

Prophet 600, Sequential Circuits @ 07 July 2016, Comments Off

sci_prophet_600 ” This Prophet 600 sat unused in a dust and smoke free environment for the last 10 years. I’ve been the primary owner for 17 years now. It was just fully serviced by the world renowned Analog Lab in Queens NY. They also upgraded the synth with the Teensy++ board loaded with the Gligli CPU/firmware remake. Everything has been cleaned and calibrated to perfection. The only flaw is a small chip in the wood panel which you can see in the pictures. ” Link

Prophet 600, Sequential Circuits @ 07 July 2016, Comments Off

p600 “Here we have a great! 9/10 condition SCI Prophet 600. This was kept in my closet for about 5 years untouched. I recently took it out, cleaned the key contacts and checked the battery and all works perfect!. This is really a great example of the 600. Functionally great as well as cosmetically. Its not a 10/10 because of some scratches to the side wood panels, please see picture. Comes with a heavy duty Calzone style case, manual, and power cord.” Link

Prophet 600, Sequential Circuits @ 30 June 2016, Comments Off

p-600“Other than the notorious problem of the membrane LED display panel having seemingly random display issues — in this case the upper-left element displaying too bright (when a number that uses it is present – see pictures) — the membrane panel functions just fine, we’ll call this 9/10 functionality. And as for cosmetics, other than a couple small blemishes (see pictures), we’ll call this 9/10 cosmetically. See all pictures, this keyboard is a gem. I have had it stored in the included padded gig bag since about 2002. I just tested all functionality on (March 12, 2016) and it is in top working condition (other than the membrane display issue you can see from the pictures).” Link

Prophet 600, Sequential Circuits @ 23 June 2016, Comments Off

p600 “Just took this keyboard out of storage with the intention of selling it. It powers up and all of the keys function but the presets don’t seem to change the tones. The filter section seems to work along with the sequencer and arpeggiator. There is some cosmetic damage to the wood panels as shown in the pictures. I’m sure this keyboard will need some refurbishing to get it up to 100% but I don’t feel like messing with it, so here’s your chance to get a prophet 600 at a good price. Included in the auction is a power cable, original box and factor preset cassette. ” Link

Prophet 600, Sequential Circuits @ 16 June 2016, Comments Off

600 “Perfect working P600 with flight case included. Currently loaded with original patches. Excellent working condition must sell due to moving. Flight case is anvil style. With options for the new gligli update the skies the limit with this synth!” Link

Prophet 600, Sequential Circuits @ 02 June 2016, Comments Off

600 “I have for sale a Sequential Circuits Prophet 600 Vintage Polyphonic Synthesizer (c.1984). I purchased the item from a now defunct studio in Birmingham. I purchased a new switch pad from LA Synth and it was fitted here in England by James Walker of Synth Repair Services in Stoke-on-Trent. The item has also been checked throughly and the calibration reset.

The synthesizer is in excellent condition with no visible marks or scuffs.” Link

Prophet 600, Sequential Circuits @ 21 April 2016, Comments Off

p-600“Near mint almost mint prophet 600 with Gli Gli CPU upgrade. You won’t find a nicer one.” Link

Prophet 600, Sequential Circuits @ 17 March 2016, Comments Off

p600Small ding in the membrane near the panel readout. The membrane is 100% functional. It was just serviced and given a perfect bill of health – new voice chip on #6, intermittent socket repaired, all key contacts painted.” Link

Prophet 600, Sequential Circuits @ 18 February 2016, Comments Off

p600 “If you are looking at this Unit you know what it is!!! This is a Prophet 600 w midi in/out – cassette in/out – footswitch – Filter CV In – & Audio out (Standard Plug). I purchased this 20- 25+ years ago as a Demo Unit. More as a Toy than anything. I even had the Cassette with it…It was Sold Years Ago. This unit has been used very little. Has Mainly sit covered or boxed in spare bedroom(Non Smoking Home). Plugged it in today…Works Great- Lots of Fun and a Really Serious Instrument. When I was younger this and the 5 Model were King! And Expensive. I actually put this in a Yard sale years ago, and it did not sell.(Someone missed a great buy!) I still have the Original Box and Packing that it came in! I have the Original Manual Somewhere boxed up…still looking for it. If I find it you will get it, if not I am including a CD with Both Sequential Circuits Operation and Technical Manuals on it. This Should Cover Everything!!” Link

Prophet 600, Sequential Circuits @ 28 January 2016, Comments Off

9 “Selling my Prophet 600. Its in great condition, I just has the synth serviced and re-furbed at Analog Hut in LIC. Comes with the manual and power cord. There are a few minor imperfections on the bottom frame and in a few spots, all superficial. Works great. All original wood panels and frame.” Link

Prophet 600, Sequential Circuits @ 28 January 2016, Comments Off

p-600 “Up for sale is my beloved Sequential Circuits, Prophet 600 synthesizer. I have owned it for almost 30 years and it has been treated well. It’s been kept covered & has always run from a power conditioner.

The Prophet 600 was the first commercially available synth to implement MIDI. It has two oscillators per voice with saw-tooth, triangle & variable pulse wave-forms. The oscillators can be individually tuned or synced together. VCF and VCA sections are similar to the Prophet 5 and the ‘Mini-Moog’.

A ‘Poly-Mod’ section was included in the Prophet 600. Its functions include: 100 digital patch memories; an on-board arpeggiator; a 2-track sequencer & poly-modulation as well as glide & flexible modulation capabilities.

Also included in this auction are the original operator’s manual, the original factory program cassette, MIDI control summary sheet, a power cord, MIDI cable & a gig-bag… everything you need to enjoy this amazing synth!

All knobs, buttons, switches, memory and connections are fully functional. I’ve had it professionally serviced, cleaned and repaired after a recent power transformer failure. During its service, the transformer, 1 IC and 1 pot and knob were replaced with ALL ORIGINAL PARTS. ALL internals and contacts were also thoroughly cleaned, tested and lubricated. The shop receipt will be enclosed with purchase.

There are some light cosmetic scratches and wear on the wood end panels (see pictures), due to gigging and age, but not bad at all, for its age and history. The manual is in two pieces, but it is complete. I do not have the original program cassette.

Since this synth has MIDI capability, I’ve played it from its own keyboard, from my EWI wind controller & other MIDI capable keyboards. All work beautifully!” Link

Prophet 600, Sequential Circuits @ 28 January 2016, Comments Off

prophet-600 “One word: Incredible! This keyboard is in excellent working order, and very good cosmetically except for chip on wood panel and some marks from normal use. (which could be switched out cheaply/easily).

Keyboard has the gligli OS mod installed which basically modernizes the operating system and upgrades the processor to fix the flaws that have plagued the P600 since it was released. Key improvements are faster envelopes (with adjustable envelope curves) as well as fast knob resolution to eliminate zippering. Basically this baby is now as close to a Prophet 5 as your going to get.” Link

Prophet 600, Sequential Circuits @ 21 January 2016, Comments Off

p600 “On top of that, this has the turbocharged modification which gives the P600 more features, better envelopes and better tuning! It really enhances the P600 in many ways!” Link

Prophet 600, Sequential Circuits @ 21 January 2016, Comments Off

p600 ” All sounds have been factory restored via the cassette. Which is included. It has some cosmetic dings on wood and on top but not anything bad. Also the Freq A switch is broken off. I had a little plastic piece glued in and it switched just fine. Can also switch with your finger nail. A new switch was priced once at 8 bucks just for the part not including labor. Switched out a broken key in 2012 and at that time cleaned every contact point and factory reset sounds. Has only been turned on less than a dozen times since. As far as I can test all sounds and functions work just fine. The wheels work but not sure if they should be more “springy”. I may just be used to newer synths. Theyve been that way since I aquired it. Ive had this board since 2005. It had only one previous owner. Once again, as far as I can test all sounds and functions work. So selling AS-IS.” Link

Prophet 600, Sequential Circuits @ 31 December 2015, Comments Off

p600 “Nice synth.Case needs re-foam.
New program pad.New walnut end caps. Calzone flight case.
Smooth action and factory patches.” Link

Prophet 600, Sequential Circuits @ 24 December 2015, Comments Off

600” Serial Number: 2205

This is a lovely and well functioning Sequential Circuits Prophet 600, and it sounds wonderful. Fully stock and all original, this synth has had one consistent owner for the majority of it’s lifetime, and minus a little dusting, canned air, and deoxit, has had no cause to be serviced.

We will lovingly pack this instrument for the journey to its new home, will include power cable.” Link

Prophet 600, Sequential Circuits @ 17 December 2015, Comments Off

p600 “I do not know a lot about these synths, but a friend who does told me it is in good shape. It has some scuffs and stickers, one key is cracked (see the pictures), it needs a power supply and a battery needs to be soldered down. He stated that everything works as it stands at the moment. A great project to be restored. Because of my lack of knowledge on this item I will do my best to answer any questions, but I am selling this item as is with no guarantees. ” Link