Six-Trak

“I tested all the keys and it seems OK.

It was really used that much.

Very expensive when my dad bought it.

This was the keyboard to have

6 separate wave sources

Does not have the end panels” Click here to visit listing on eBay

“The following services were just done, which cost me over $250! IF you find another one for less than what mine is selling for, and since most of the used ones out there, that are supposed to be “fully functional”, turn out NOT to be; you will then need to find someone who would work on these (which is very rare nowadays), and then who knows how much it would cost to make it fully functional??! Especially since these synths are over 40 years old, which means unless they had just been serviced, hardly any of them would be fully functional; and CONDITION IS EVERYTHING!

SERVICES DONE:

Full inspection
Load tested for 2 hours
Key-bed serviced
All sliders/knobs serviced
All contacts cleaned
All buttons serviced
Cleaned inside and out” Click here to visit listing on eBay

“Sequential Six Trak – this is somewhat of a hidden gem. underground niche synthesizer, being not over-popular, but still sweet, and undiscovered by too many.

it’s 6-part multitimbral and 6-voice.

means that it can be a straight forward 6-voice poly, but also each voice can have it’s own preset assigned to it, and they even can be assigned to different midi channels, and sequenced using internal built in 6 track sequencer, or external midi!!!

great thing, is fully working, everything is great, and even has the original box!!!

shown on the last picture. the box is a bit tired, but still is a box, and is original, from the 1984 itself, what a treasure.

has couple of minor downsides – the push buttons sometimes are a bit temperamental, they can react as if they are double pushed, but it doesn’t happens often.

also the power cable has some insulation tape on it. shown on one of the last pictures. I know that this is not really good, but there are no issues with it. potentially and ideally the power cable would have to be changed. I can do it at some point, just need to find some time. for now it’s sold as described and as shown. you probably shouldn’t have any issues with the cable, or with replacing it.” Click here to visit listing on eBay

“This vintage synthesizer from Sequential Circuits is a must-have for any musician or producer looking for a unique sound. The six-trak Model 610 is a keyboard synthesizer with a classic interface that is easy to navigate. The synthesizer is designed for music professionals who require a high-quality sound engine that can handle complex sequences and layer multiple sounds. The brand is well-known for producing high-quality pro audio equipment, and this synthesizer is no exception. The Type of Keys is Synth, and the Model is Sequential Circuits six-trak. This keyboard synthesizer is perfect for musicians who require a versatile and reliable machine to create their music.”
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“I tested all the keys and it seems OK.

It was really used that much.

Very expensive when my dad bought it.

This was the keyboard to have

6 separate wave sources

Does not have the end panels” Click here to visit listing on eBay

“Sequential Circuits Six-Trak Professional Synthesizer. Used about 10 times in studio. Has MIDI. Unique analog synth with digital programming and controls. Has onboard 6-voice sequencer. Works great.” Click here to visit listing on eBay

” Vintage 1984 Sequential Circuits SIX-TRAK 610 Analog Synthesizer/Sequencer” Click here to visit listing on eBay

“Vintage analog poly synth in good working condition. No dead keys or bad oscillators. Good looking wooden side panels and face as you can see from the pictures. Light wear to be expected from a synth made in the mid 80’s. Nice arpeggiator and simple sequencer. It has midi so you can run it from an external sequencer,cpu or other midi device. 6 voice polyphonic or you can stack all six oscillators in Unison for thick monophonic bass sounds and such. Lacks multi knob tweak ability but you can assign a knob to tweak individual parameters like the filter or whatever you desire. ” Click here to visit listing on eBay

For parts or not working: The item does not function as intended and is not fully operational. This includes items that are defective in ways that render them difficult to use, items that require service or repair, or items missing essential components. Unit powers on and all 49 keys are in working order. The 10-key select pad is partially defective, you have to press most of the buttons with to much pressure to get them to function if they work at all. The Sequencer side they seem to be in much better working order it may need a bit of work. The knobs & wheels are in good working order. Sound comes out with no issue when hooked up to a powered speaker. This will need work to be fully functional. ABSOLUTELY NO REFUNDS ON SHIPPING FOR ITEMS THAT ARE “For parts or not working”. Click here to visit listing on eBay

“Sequential Circuits Six Trak Polyphonic Analogue Vintage Synthesiser – 100V

Introducing the Sequential Circuits Six Trak keyboard synthesizer, a classic piece of vintage musical equipment ready to bring your music to life. This analog synthesizer boasts a polyphonic sound and is perfect for those seeking a unique and rich tone. The Six Trak model from Sequential Circuits is highly sought after by musicians and producers alike and is sure to be a valuable addition to any collection.

Condition: Pre-owned and in good condition. There are a few scuff marks on the keys and wood on the sides and front. Please review all images. We plugged it in and the lights came on. We couldn’t test the sound. Sold as is. ” Click here to visit listing on eBay

“Pre-owned Condition : with flaws such as scratches/scuffs, painted “0” on back model number, dusty. (SEE PHOTOS)” Click here to visit listing on eBay

“This Six-Trak is basically NOS. It sat in its original box with original molded foam packing for decades. I took it out of the box in 2021 and unfortunately some reaction took place with the packing foam and some paint on the front came off (see pics). It is strictly cosmetic, but a bummer because the synth is perfect mechanically. I upgraded the firmware,” to v. 14. The screen, buttons, wood ends and keys are like new.

The original operational manual is also included. If someone wants to have the paint touched up this would be a museum piece.” Click here to visit listing on eBay

“SEQUENTIAL CIRCUITS SIX TRAK – Polyphonic Vintage Analogue Synthesizer.

The six track is one if the last attainable vintage synths with a genuine pedigree. whilst it lacks the chorus of the juno’s it has a more complex and nuanced set of sound parameters and once you add a chorus it really comes to life. on top of that it’s fully multitimbral with the ability to play all six voices independently each with a different sound.

for an early synth the midi implementation is really good with cc support across all parameters. which potentially makes it your sequencers newest best friend.

the synth is in really really good condition with a small scuff at the top which i’ve tried to photograph. it comes with the original manual, cheat sheet – actually i still have the ordinal box which is really tatty but may be of interest it even has the original sales receipt from 1987.

i bought this in the states so it’s a 110v but i’ve been running it happily off a step down converter for the past 2 years.” Click here to visit listing on eBay

“Original owner. Lightly used on gigs in the 80s and 90s. Works well except for C3 key is dead. Gel buttons work but need to push a little on some of them. Overall works well and has served me very well over the years. Great way to learn simple subtractive synthesis and you can’t get a fatter sound. Sequencer works as well as stack mode”
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” Really nice vintage six-voice polyphonic multitimbral synth with a lovely Sequential sound. One of the first ever MIDI-controllable synths and one of the first multitimbral synths too. It has a really neat onboard sequencer where each of the six sequencer tracks can be a different patch. It also lets you assign a different patch to each voice for a unique unison mode of six different patches stacked for every note. Really neat little synth; I’m only selling it because I’m out of studio space!” Click here to visit listing on eBay

” Sequential Circuits Six-Trak Analogue Synth – perfect working order – RARE!.

Midi in and out” Click here to visit listing on eBay

“Sequential Circuits Six-Trak Analogue Synth -Works,but has issues.Synth is in very good condition.It has only been outside my studio twice(I moved)since the 80’s.It has the new OS ver 14.Let you just turn the Program knob to change patches..No more punching numbers.Plus a bunch of other cool MIDI stuff.I will also include the original ver 11 chip too. The unit plays great! You can program patches and save them.The only problems I see are if you use the arpeggiator the notes will play a note lower!??Sequencer will record,but also play a note lower on playback..And the stack a/b won’t do anything.I have 2 of these keyboards.I bought them at the same time in the 80’s.Never changed the batteries(40yrs)!They both are doing the same thing..So maybe the battery has something to do with it.Batteries on Amazon are like $25.Not saying that would fix it,but strange they both are doing the same thing at around the same time.Other than that,it works great. Its in really great shape also!Check out the pictures,Most of the original sounds are still in there.Including some great stacked bass sounds. I bought caps for the knobs that give it a Prophet 5 look.They look very cool in the light..You can take them off,not glued.Unit sounds great…It just needs some effects…They didn’t give you that stuff in the 80’s LOL .Thank you for looking!!!” Click here to visit listing on eBay

“For sale is a Sequential Circuits Six-Trak Polyphonic Analogue Synthesizer. It has 48 keys and is multitimbral, meaning it is capable of playing more than one sound simultaneously and capable of combining up to six sounds, creating complex sonic textures. The rear panel has a monophonic audio output, control footswitch jack, and midi in & midi out jacks. There are user manuals available online to explain the many functions. I am not exactly sure of the production year of this synth, but I believe it was made in the 80’s. In either case, the serial number is shown on one of the photos, so you can look it up online. The battery in this synth has long died. Therefore, I can verify some of the functions but not all and that is the reason I am selling it as is for parts. That said, I plugged it in and powered it up. There is a default sound, so I can verify that all 48 keys work. No broken keys. All Leds light up. You just cannot select any sounds until a new battery is installed and the original sounds are loaded back to the internal memory. The pitch wheel and modulation wheel work perfectly. The master tune and master volume knobs work perfectly. The audio output jack also works perfectly. There is a missing knob for the track volume. Other than that, the front panel looks clean. The right wood panel has a broken corner. A new battery could have this working like new again.” Click here to visit listing on eBay

“Sequential Circuits Six-Trak Polyphonic 48-Key Keyboard / Synthesizer.

Unit powers on, everything appears to work as it should. The button for stack b Is missing.

No stock keys, a very clean/functional machine with those amazing retro tones.

There are scratches and oxidized areas, as referenced in the pics. Unit is sold as-is, with no warranty.”
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“Sequential Circuits Six-Trak Synthesiser.

body is in great condition but the wooden ends have been scratched
they were new but suffered a fall but I think a little creative sanding could sort it out…
Synth works perfectly as it fell during a service..!” Click here to visit listing on eBay

“Had this synth from new since bought in the mid 80’s. The keyboard was serviced by Cyberwave EMS last year and is in excellent working condition. Also in fantastic condition generally as you’ll see from the images. Free to collect of course but I will also deliver for free within a reasonable range of Gloucestershire. Would not recommend using a courier but can send insured if desired.” Click here to visit listing on eBay

“Condition : Used, clean, and fully functional”
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” I’ve owned a few of these over the years. They all have their slight oddities, but this one is in pretty good condition. 

If you’re looking at the listing you probably know what it is already. Sounds like a Prophet 5 for a fraction of the price. ” Click here to visit listing on eBay

“1984 SEQUENTIAL CIRCUITS SIX TRAK SYNTHESIZER :

* does not work = NEEDS SERVICE

* 1 key is broken

* some screws & 1 pot knob are missing

* 110 volts version 

* SOLD AS IS – NO RETURNS” Click here to visit listing on eBay

“Overall good condition considering the age. All buttons and knobs operate. All keys operate. There is wear and tear that can be seen in the photos. This is a very vintage item, so please don’t expect mint condition, but it functions well and sounds AMAZING! It is a little dusty from storage and didn’t have time to deep clean, and that shows in the photos as well.” Click here to visit listing on eBay

“Sequential Circuits “SIX-TRAK” Polyphonic Synthesizer.

Great condition just one key has a hair crack on it not deep see pictures

Works great or your money back” Click here to visit listing on eBay

“What’s included in this lot:
Sequential Circuits Six-Trak Polyphonic 48-Key Synthesizer in original box” Click here to visit listing on eBay

“Sequential Circuits Six-Trak Synthesiser 1984.

This unit is in great condition and works as it should. Sadly the internal battery died so the synth is not storing patches or doing anything interesting other that powering up. Played fine when last used few months ago.

The battery is soldered in but could be replaced with a battery holder . Cheap easy fix, low bargain price. 100 patches can be reloaded via SYSEX bank dump as I have done in the past.” Click here to visit listing on eBay

“Works great. Original owner. Battery backup was replaced with an off-circuit-board battery holder and now uses a CR123 battery instead of the oddball lithium it originally came with. In great cosmetic shape. All buttons and caps are present and working. Very cool classic synthesizer!” Click here to visit listing on eBay

“Sequential Circuits Six-Trak Polyphonic 48-Key Keyboard / Synthesizer.” Click here to visit listing on eBay

“Sequential Circuits Six-Trak Vintage Synthesizer.

This is a great little synth in perfect working condition. As pictured there is one key that’s partially broken and another that is cracked, but this does not affect the key playing the notes. Some scuffs here and there but ultimately in good condition!” Click here to visit listing on eBay

“Howdy!!!

You are bidding on a used “Sequential Circuits Six-Trax” Polyphonic Synthesizer with built-in 6 track sequencer in it’s original factory box with the original owner’s manual.

This vintage 49 key mono Synthesizer is priced to sell!

It’s in 100% working order.

It features “Polyphonic Mode” and “Unison Mode.”

In “Unison Mode” you can use all six oscillators for those big and fat Mini-Moog type Lead and Bass synth sounds!

I am the original owner of this keyboard.

It has been in my studio or it’s box since I’ve owned it.

This unit is in immaculate condition!

There are no scratches or heavy dings on the wood.

There are no scratches on the face or the keys.

There are just a few small blemish scratches on the bottom of the unit from a keyboard stand.

I tried to photograph the scratches as well as I could.

(see attached pictures)”

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“Sequential Circuits Six-Trak Synthesiser Condition: LIKE NEW!.

Belonged to my dad who never actually learned to play. Has only been used a handful of times. Condition is like new and is in perfect working order.” Click here to visit listing on eBay

“This is a joy to own but alas I cannot do it justice. Classic sounding from a time long long and they do not make them like this anymore. Studio use only and recent repair and upgrade.

Looks great with the odd mark and scratch which is to be expected. power is direct from the back to the plug. I have also printed out most of the manual (it is not the original). The joy of playing this is that it is 6 Note poly which was a rarity back then. Most of the tech spec is on line but if you are looking at this piece of history you will know all about it anyway.” Click here to visit listing on eBay

“The Six-Trak was an analogue synthesizer manufactured by Sequential Circuits and released in January 1984. It is notable for beingone of the first multi-timbral synthesizers, equipped with MIDI and an on-board six-track digital sequencer.

– Was used in home studio only, from new.

– Has been in dry storage for many years.

– Fantastic condition with NO wear marks on ether the body, keys, buttons, knobs or transfers.

– No modifications, all original.” Click here to visit listing on eBay