Synthfind

“For sale is a Sequential Circuits Six-Trak analog synthesizer. Cosmetically the synth is in pretty good condition considering it’s age with only minor scuffs and blemishes, however whenever you throw midi at it it begins to act up, either dead voices start appearing or it cuts out completely until you resit the battery. For this reason it has to be under for repair.” Click here to visit listing on eBay

” Sequential Circuits Six-Trak Model 610 Vintage Analog Synth with original manuals and guides and Evolution UC33 USB/MIDI controller

Here’s a great and affordable package – a killer vintage analog synth and a modern USB/MIDI controller to bring you into the present day for all of your routing and recording needs! See full descriptions and specs below. The Six-Trak is an awesome unit and a straightforward way to break into analog synthesis. This one comes with the original manual as well as programming notes and a quick start guide. The Evolution UC-33 USB MIDI controller comes with a USB cable and its original box.

The Six-Trak is in excellent working order, all of the keys and buttons work properly. Some cosmetic wear typical of a 30+ year-old unit (see pictures). Power cord is taped up and could probably stand to be replaced. The Evolution UC-33 has some minor cosmetic wear but is in working order and includes original box.” Click here to visit listing on eBay

“This Six-Trak is in great condition, just came from a recent service and calibration. It is working and sounding great!

It has minor cosmetic wear and tear on the face plate, a bit more on the wooden side panels. (please see pictures)” Click here to visit listing on eBay

“This Six-Trak is in great condition, just came from a recent service and calibration. It is working and sounding great!

It has minor cosmetic wear and tear on the face plate, a bit more on the wooden side panels. (please see pictures)” Click here to visit listing on eBay

“This is a 1983 Sequential Circuits Six-Track six voice analogue synthesizer. It is one of the first analogue synths to include MIDI in and out and has 64 preset sounds. It has six voices that can be stacked individually as well as plays with six-voice polyphony. I am including the original manual. Because of it’s vintage nature it is being sold as is. Everything is tested and working.” Click here to visit listing on eBay

“This is a Sequential Circuits Six-Trak synthesizer in great working condition. Multi timbral synth with advanced early MIDI capabilities. You can multi stack to get monster analog sounds. It’s got some really nice custom made looks like birch ends. This is the Japanese 100VAC version but the studio I got it from insisted they always used it at 117VAC without issue. I contacted Wine Country because they sell a US transformer for this for only $10 and David Sesnak formerly of Sequential Circuits, emailed me back and advised it’s not necessary, these 100VAC Six-Traks work fine at 117VAC.” Click here to visit listing on eBay

” This is a Sequential Circuits Six-Trak synthesizer in great working condition. Multi timbral synth with advanced early MIDI capabilities. You can multi stack to get monster analog sounds. It’s got some really nice custom made looks like birch ends. This is the Japanese 100VAC version but the studio I got it from insisted they always used it at 117VAC without issue. I contacted Wine Country because they sell a US transformer for this for only $10 and David Sesnak formerly of Sequential Circuits, emailed me back and advised it’s not necessary, these 100VAC Six-Traks work fine at 117VAC.” Click here to visit listing on eBay

“Ive put in a good effort trying to get this thing fixed, but I think it’s time to pass it on. Essentially, the main issue is that the sixth channel is screwed up. This usually manifests by not producing any sound whenever you hit a note on the six channel, and unfortunately, it’s kind of unpredictable which you know will be on that sixth channel. You can partially correct the problem by setting the voices to monophonic, but that ruins a lot of the fun. Additionally, some of the numeric buttons aren’t working very well.

The last guy that took a look at it gave me a description of what’s going on. I’ve quoted him below.

“Its pretty beat – membrane switches are pretty shot, something is busted in channel 6 and the case is rough. (…) All 6 of your chips are good, it’s something else in channel 6 not the synth chip. The chips are CEM3394″

He’s encouraged me to sell it for parts since he believes a repair of this particular unit might be kind of difficult. Of course, that’s just one opinion.” Click here to visit listing on eBay

“Sounds super awesome and works well. Used very rarely in non smoking studio. Bid with confidence. Starts at .99” Click here to visit listing on eBay

“SEQUENTAIL CIRCUITE KEYBOARD IN EXCELLANT CONDITION” Click here to visit listing on eBay

“This is a Sequential Circuits Six-Trak. Powers up, all lights come on but don’t go out. No sound, no response to buttons or keys. Power switch is broken and looks like it has been connected straight through, so it powers up as soon as it is plugged in. All parts appear to be present. Sold as is for parts or repair only. 117 VAC, model 610.” Click here to visit listing on eBay

“Sequential Circuits Sx trak , superb condition and all working , new battery

Buttons all work but the number 2 can be a bit sensitive ( probably needs a clean ) but everything is working ,a new memory battery was fitted
by its previous owner and it has all the original presets .” Click here to visit listing on eBay

” The Sequential Circuits Six-Trak Polyphonic Synthesizer may be labelled as a “beginner model” by the company, but the features and functionality make it a prime choice for any synth enthusiast. Built with 48 velocity-sensitive keys and the same Curtis circuitry found in the company’s more expensive models, the Six-Trak boasts six voice polyphony and six VCOs for solid lead, bass, and pad modeling. Throw in an expansive onboard sequencer and single knob for one parameter control to achieve a world of sound right out of the gate.

I’ve owned this synthesizer for 2 years and have had nothing but joy from it. The only reason I’m selling is so I can afford to buy… another synthesizer, of course. Comes with 99 great patches. You can edit those to make most sounds you might want. The sequencer is very simple but intuitive and includes some fun features such as multitimbrality (multiple patches at once) and volume for each voice. It’s also one of the few synths from this period that has full midi functionality, so you can plug it right to the computer or a sequencer. Overall this thing is in great condition. The wood panels are slightly scuffed on the corners but no actual damage. All buttons and keys work. You don’t wanna miss out on this 1984 polysynth! Does NOT include stand. ” Click here to visit listing on eBay

” 1984 Sequential Circuits Six-Trak in great condition, serial #245. I bought it from a sixth form college last year as the department that owned it was shutting down. I’ve since replaced the memory battery and reloaded the factory presets. The synth is now fully functional with all 6 voices, filter, LFO, amp, sequencer, stack, arpeggiator, wheels* etc working perfectly, and makes some really great sounds in poly, unison and stack modes. It works with a foot controller though I’m not including one.

The ‘1’ key needs some pressure before it registers, the top left corner is slightly chipped (pictured) and there are light patches on the sides where stickers used to be (also pictured).”
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“Vintage Sequential Circuits Six-Trak in excellent working condition. Very minimal cosmetic wear. Great analog classic sounds! ” Click here to visit listing on eBay

“This is a vintage Six Trak synth from 1984 in excellent condition! All knobs, sliders and buttons work. No broken or missing keys. It’s super clean.” Click here to visit listing on eBay

“Good condition . Everything works as should .. Sounds great .” Click here to visit listing on eBay

“Here is a nice vintage SC Six Trak synth. Looks and sounds great! Recently serviced with zero issues. ” Click here to visit listing on eBay

“For sale one Sequential Circuits Six-Trak synthesizer in very good working condition. It is a US voltage 110v model

All keys, knobs,buttons and sliders are original and working correctly.

There is some minor crackling from some of the pots and sliders when moved. It would benefit from a service but is being sold as is.

The front panel has minor marks from use, the side panels have some scuffs.”
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“Awesome little synth. Very flexible despite the somewhat unusual interface. Sounds awesome. Sold as is.” Click here to visit listing on eBay

“For your consideration: Sequential Circuits SixTrak.
Get the legendary Sequential sound without breaking the bank!
The SixTrak is one of the earliest synthesizers to boast midi as well as multi-timbrality. More features include an arpeggiator as well as a sequencer. All of this in a great sounding analog synthesizer. All keys, buttons and potentiometers work fine. The only flaw is the power cable which has started to open up at the point of attachment.(See images)” Click here to visit listing on eBay

“I’ve owned this synthesizer for 2 years and have had nothing but joy from it. The only reason I’m selling is so I can afford to buy… another synthesizer, of course. Comes with 99 great patches. You can edit those to make most sounds you might want. The sequencer is very simple but intuitive and includes some fun features such as multitimbrality (multiple patches at once) and volume for each voice. It’s also one of the few synths from this period that has full midi functionality, so you can plug it right to the computer or a sequencer. Overall this thing is in great condition. The wood panels are slightly scuffed on the corners but no actual damage. All buttons and keys work. You don’t wanna miss out on this 1984 polysynth! Does NOT include stand. ” Click here to visit listing on eBay

“Up for auction is a Sequential Circuits Six-Trak vintage analog synthesizer. This model is notable for being one of the first multi-timbral synths, equipped with MIDI and an on-board six-track digital sequencer. The unit is functional with one exception; track 5 does not work. The other notes play. We are not experts on keyboards so there may be other issues we do not know of. That said, please know that you are going to have to have this repaired or use it for parts. There are NO returns. Physically it’s in good shape, with a repaired crack in the wood (see pics). Other than that it just has a few minor cosmetic marks here and there, typical of a 30 year old used piece of gear.” Click here to visit listing on eBay

” Up for auction is this vintage Six Trak Analog Synthesizer by Sequential Circuits Inc. I am just the second owner and have used it sparingly (probably less than 5 hours total – really !! ). It is in excellent condition and everything on the unit works (no issues). There are just a couple minor scratches on the back but other than that you would be hard-pressed to find one in better condition.” Click here to visit listing on eBay

“Up for auction is a Sequential Circuits Six-Trak vintage analog synthesizer. This model is notable for being one of the first multi-timbral synths, equipped with MIDI and an on-board six-track digital sequencer. The unit is fully functional with one exception; track 5 does not work. Everything else on the synth is good. Physically it’s in good shape, with a repaired crack in the wood (see pics). Other than that it just has a few minor cosmetic marks here and there, typical of a 30 year old used piece of gear.” Click here to visit listing on eBay

“This item is Functional
One key doesn’t work (Taped one on 1st picture)
Sold with not original Harcase (Korg MS 2000)

[APPEARANCE]
Excellent condition
Few scratches and dust on keys

Attention!!
AC100V 　50/60W
Japanese plug

You may need a power converter depending on your country. ” Click here to visit listing on eBay

“The unit is working but selling as is for parts, refurbishing. All keys and functions seem to be working. I did not check the midi ports. The on/off switch works but is incredibly hard to turn on/off. It appears someone replaced the audio out jack. It is missing one knob for speed and shows wear, notably some rust, a chip in the wood on one side, and upon close inspection the black keys on the left of the board are chipped in the back (where you can’t see) where there should be full “hooks” if you will that prevent the black keys from sliding or popping out of place. They are seated fine and don’t move at all but if they were pulled on they would dislodge-it’s easy to put them back and again, they are in place firmly and all work just fine. Rubber of the power cord at exit in back is frayed but internal wiring appears ok and provides power but power cord might need replaced. Overall cosmetics aren’t great but seems the electronics are good. Selling as is for parts, repair or refurbishing. (I’ll try to put up a video tomorrow so you can hear it).” Click here to visit listing on eBay

“Description: . comes as seen. Classic Vintage Synthesizer. see pictures. Please see all pictures. dated on the inside 1984. all original and unmodified except for the red chicken head track volume knob.

Condition: Great shape. some minor scuffs and light wear only. no damage or issues. tested and working good. No Issues. ” Click here to visit listing on eBay

“I am selling the amazing and beloved Sequential Circuits Six-Trak. I have owned this Synth for about 2 years and have upgraded various areas of the Synth. Despite some minor cosmetic scuff marks due to its age, this Six-Trak is in pretty good shape. The right wooden side panel is broken and is something that can be fixed easily by applying some wood clue or by buying new wooden side panels for only $60 on “gmusynth” Some of the key features for my particular version of the Synth are.

1. Multiple Outs! This synth was modded so that all voices have their own output on the back. (AWESOME!)
2. I recently upgraded the Firmware from v9 to the latest version from tauntek v14.
3. Fixed some of the broken keys, (cosmetics)
4. Bought a new knob cap for the main volume knob (which I haven’t attached yet because the new knob cap needs to be modified, cosmetics)

You can read up on the new firmware version by googling tauntek SixTrackBug. This firmware version fixes a lot of the parameter issues with previous versions and adds some new features.” Click here to visit listing on eBay

“Hello! I’m selling a Vintage Sequential Circuits Six Trak Analog Synthesizer. This synthesizer has been tested, played, and turned on in order to verifiy that everyone works perfectly. From 1983, this vintage keyboard makes beautiful sounds when considering it’s age.” Click here to visit listing on eBay

“Used and in full working order from a smoke free studio. Selling due to recent upgrades. Great little synth. No original box or manual I’m afraid. Item will be well packaged.” Click here to visit listing on eBay

“A Vintage Sequential Circuits Six-Trak Analog Synthesizer with Operation Manual. Synthesizer receives power, and to my knowledge, works properly. 49 keys. Model: 610 Serial # 610-003276. Dated from 1983 based on the publication of the Operation Manual. The Operation Manual has instrument instruction as well as a wiring diagram and play sheets all unused. A little bit of writing on the Factory Program List page.

The wood cabinet shows very minor blemishes on right edge, and a chip on the cabinet on the left side (see pics). Does not affect play.

Please see images to qualify the condition of the item.

The synthesizer will be properly packaged and shipped via USPS.

I bought this synthesizer nearly 10-15 years ago, and have barely used it. Time to get it to someone who will.” Click here to visit listing on eBay

“Excellent condition for a 30+ year old synth. I am the second owner (bought in 1990) and have kept this early production model in my smoke free studio ever since. Never gigged or toured. Great sounding unit with no issues. You can find the manual online which I highly recommend. This thing is surprisingly deep in its layering abilities. Sorry, no international bidders please. Good luck bidding!” Click here to visit listing on eBay

“Selling my incredible Six Trak. Upgrading for some different pieces, so this baby needs a new home. Sounds great. Recently cleaned and serviced. I don’t have the manual, but the Six Trak manual .PDF is available online. I recommend checking that out once you pick this up to learn to program this synth. The layering capabilities is what makes this synth so great in my opinion! Thanks for checking!” Click here to visit listing on eBay

“It’s in nice shape! A much more affordable way to get that Prophet sound! Also accepts midi cc so easy to hook up a bcr2000 or similar knob box. All voices work saving and editing work, arp works, sequencer plays the preset sequences! ” Click here to visit listing on eBay