Korg Polysix with Kiwisix Upgrade

“Korg Polysix with Kiwitechnics Kiwisix Upgrade.
Here for sale is a Korg Polysix WITH a Kiwisix upgrade. Why so cheap? First, because I want to actually meet the buyer. I’m not going to ship it. We could arrange something where I drive and meet you somewhere. Second, because the Kiwisix upgrade isn’t finished. The Kiwisix board has been installed but the tuning procedure has not been done. Because of this each octave of the keyboard is slightly out of tune. A few keys are not responsive and will need conductive paint applied to them or new rubber key contacts. All of the controls work, but to access some of the additional Kiwisix functions further modifications must be done. All of this is explained in the Kiwisix manual. The keyboard does make audio come out of its outputs as it should. The original KLM-387A board is included, complete with fried traces from where the battery leaked out. The original NEC 8049 chip is also included.” Click here to visit listing on eBay

Korg Polysix

“This is the last of two Korg Polysixes which we have meticulously refurbished over many days. This unit has a new CPU board installed.

The synthesizer has had the following work undertaken:

Keys removed from keyed and individually cleaned, together with the keybed PCB contacts and rubber actuator.
A full PSU recap
New KLM-367A replacement board installed from Synthtronics
All 19 tact switches have been replaced with quality Omron switches.
LED on Manual button has been modded with an amber light together with an amendment to the resistor.
Each knob and switch cap has been through a Retrobrite process (to de-yellow) – it looks stunning.
All potentiometers and switches have been cleaned, lubricated and deoxidised.
Each screw has been removed and deoxidised to give a classy “gun metal” appearance.
Finally, it has fully calibrated and the factory patches re-loaded.”

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Korg Polysix

“I’m selling my beloved Kiwisix modded Polysix.It’s in pretty nice shape for it’s age. There’s a few dings and the sides aren’t perfect but it’s not bad.I installed the Kiwisix mod and went through and followed the calibration procedure in the manual. Now it has midi!I also installed the graphic overly so it’s easier to navigate the Kiwisix mod.If you want to keep it original the overlay just peels off.I took it off and stuck it on again without any issues.The front panel under the overlay is in good shape.” Click here to visit listing on eBay

Korg Polysix

“I found out the sub-oscillator stops working from time to time and it seems to be a loose connector on the replaced board inside the synth. I first discovered this when I took the synth off its stand and placed it on a table. Before that the synth was working completely fine. So i figured out that when the sub oscillator stops, I need to open up the panel and gently touch the appropriate connector on the board, to move it just a little bit and then it all gets back to normal, so I assume it should be rather an easy fix. Nonetheless, I have updated the asking price to reflect that, so now it seems like a great deal for someone, who knows a thing or two about electronics ;)” Click here to visit listing on eBay

Korg Polysix

“Korg Polysix analogue synthesiser….non-modified and in amazing original condition. The common problem with battery leakage was rectified years ago and all circuit boards are free from any contamination. This keyboard has been used by me on several U.K. and European tours and has always been used in a “play in” flightcase, (included) hence the superb condition…also the main keyboard I used on two internationally released albums… Also includes original packing cartons….. ” Click here to visit listing on eBay

Korg PolySix

“Vintage Korg PolySix 61-Key Synthesizer AS IS. Item is in good used condition for its age. Unit has no output. Notes from our repair tech,
“Removed old battery, repaired corroded PC Board traces. Installed new battery holder, NMH batteries. Tried loading programs, LEDS act normally when loading. No output.” SOLD AS IS NO RETURNS.” Click here to visit listing on eBay

Korg Polysix Project Machine

“Korg Polysix Keyboard Synthesizer (non-functional) for parts or restoration.

1980’s Korg Polysix, with Manual. I played this in the late 80’s and early 90’s and has been sitting in the closet for a couple decades. It turns on, lights come on, but has no output. Obvious battery damage, common to the Polysix, on circuit board shown in photos. I do not know if there are issues besides the battery leakage damage. I’ve included photos of the interior as well so you can examine the boards.” Click here to visit listing on eBay

Korg Polysix

“This is the last of two Korg Polysixes which we have meticulously refurbished over many days. This unit has a new CPU board installed.

The synthesizer has had the following work undertaken:

Keys removed from keyed and individually cleaned, together with the keybed PCB contacts and rubber actuator.
A full PSU recap
New KLM-367A replacement board installed from Synthtronics
All 19 tact switches have been replaced with quality Omron switches.
LED on Manual button has been modded with an amber light together with an amendment to the resistor.
Each knob and switch cap has been through a Retrobrite process (to de-yellow) – it looks stunning.
All potentiometers and switches have been cleaned, lubricated and deoxidised.
Each screw has been removed and deoxidised to give a classy “gun metal” appearance.
Finally, it has fully calibrated and the factory patches re-loaded.

In good general condition – please see images for more specific details.” Click here to visit listing on eBay

Korg Polysix Project Machine

” Vintage Korg PolySix 61-Key Synthesizer AS IS. Item is in good used condition for its age. Unit has no output. Notes from our repair tech,
“Removed old battery, repaired corroded PC Board traces. Installed new battery holder, NMH batteries. Tried loading programs, LEDS act normally when loading. No output.” SOLD AS IS NO RETURNS. “ Click here to visit listing on eBay

Korg Polysix

“Korg Polysix Keyboard Synthesizer. Five of the voices, as well as unison work great on this. One voice does not work. It could be a connection inside, but I am not certain. Selling unit as-is and as described. Pictures show cosmetic condition. ”
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Korg Polysix

“Beautiful condition! The sides are not banged up. The key finish is not worn. Never traveled with it- always kept in the house. It does not have speakers. You must connect it to and exterior amplifier, recorder, etc. This is VINTAGE … it is not USB-enabled.

It does have a 1/4″ headphone jack. I have not used this in many, many years. It does turn on. It does play thru my headphones There is static when you turn volume control (typical for potentiometers this age but can be serviced). Turning the various knobs does change the sound output but I do not remember what each should do so I cannot tell you if they are all doing what they were designed to do. This same model sells for quite a bit more from other sellers on Ebay that aren’t even located in the U.S.” Click here to visit listing on eBay

Korg Polysix

“In excellent working condition. All buttons, knobs, and keys work 100%.

Newly installed battery terminal and KiwiSix MIDI Mod. http://kiwitechnics.com/kiwisix.htm

All service performed by Greg Montalbano from Oakland, CA. ” Click here to visit listing on eBay

Korg Polysix

” This is a Synthspa-refurbished Korg Polysix.
Fully working.

Also has new walnut end caps AND front panel (below the keys)… rare for a Polysix!

…So you’ll never have to deal with ugly, chipping particle board so common on Polysix’s – even refurbished ones.

Every one of the 6 voices sounds.
The keys all work.
The filter & envelopes all work.

Also, NO BATTERY LEAKAGE issue (also very common on Polysix’s) since it has a brand new lithium Ion battery installed.

Yep, this is both internally and cosmetically immaculate.” Click here to visit listing on eBay

Korg Polysix Project Machine

“Like most polysix’s that haven’t been serviced in a while, this one has the relatively common battery leak issue. It’s not as bad as some I’ve seen online, but the board it’s on and all the connections around it will need to be clean and repaired. Otherwise, you’ll need to replace the board, but there are upgrade boards available that I know people often switch them out for anyways. Pretty much all of the keyboard function seems to still be working regardless, but a few of the lights will always be on whether the appropriate button has been pushed or not. The keys with pieces of sticky note on the have switches that need to be cleaned/repaired/replaced, but there may be a few more that need the same treatment. There are a few nicks in the wood frame on either side (mostly corners) and some scratching on the back plate.” Click here to visit listing on eBay

Korg Polysix Project Machine

“Like most polysix’s that haven’t been serviced in a while, this one has the relatively common battery leak issue. It’s not as bad as some I’ve seen online, but the board it’s on and all the connections around it will need to be clean and repaired. Otherwise, you’ll need to replace the board, but there are upgrade boards available that I know people often switch them out for anyways. Pretty much all of the keyboard function seems to still be working regardless, but a few of the lights will always be on whether the appropriate button has been pushed or not. The keys with pieces of sticky note on the have switches that need to be cleaned/repaired/replaced, but there may be a few more that need the same treatment. There are a few nicks in the wood frame on either side (mostly corners) and some scratching on the back plate.”
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Korg Polysix

“Aus einem Fundus. Zustand: Getestete Led leuchten, Sound gibt er ab, die getesten Regler funktionieren. Batterie ist nicht ausgelaufen, auf Verdacht gleich ausgetauscht. Holzwangen sollten aufgearbeitet werden. Einige tasten beschädigt…Privatverkauf- keine Sachmängelhaftung” Click here to visit listing on eBay

Korg Polysix

“Korg Polysix purchased new in 1980 and barely ever used. Above average cosmetic condition. Keyboard is in excellent condition with all wheels, knobs, switches, keys and buttons present. No missing parts. Kept in cool and dry storage. Powers on and light up but no sound as the synth will need to be or repaired or refurbished. Shipping is at actual cost or local pickup.” Click here to visit listing on eBay

Korg Polysix Project Machine

“For bidding: Korg Polysix purchased new in 1982 and used until 1991. Average cosmetic condition with typical scrapes and scuffs on the side panels. Top of keyboard is in excellent condition with all wheels, knobs, switches, keys and buttons present. Has been in cool and dry storage for 30 years. No sound from keys as the synth will need refurbished. Powers on. ” Click here to visit listing on eBay

Korg Polysix

“In GOOD condition. It should be noted that there is a small chip located on the left wood-panel.
I provided a close-up picture.

This model is in it’s original condition, with original battery and no aftermarket add-ons.

All functions work as normal.

It comes with a copy of the operator’s manual and factory preset tape.” Click here to visit listing on eBay

Korg Polysix

“It works. Turns on. Buttons work. Some of the keys are not working. Also it creates a distorted sound when playing. Something is wrong with it. Not sure what. Just put a new battery in it and cleaned out the keys. Volume knob is a bit wonky. This is a bit of a fixer upper. Korg Polysix Keyboard Synthesizer. Condition is “Used”.” Click here to visit listing on eBay

Korg Polysix

“This is a used unit.

This Polysix has just come from a service. This included a power-supply refurbishment. This vintage beast is sounding great and a pleasure to play.

A new memory battery has been installed and factory patches have been loaded in for the new owner.

This Polysix is in good condition. It shows some wear on the faceplate, mostly along the top edge, as well as some cracks and nicks in the veneer. There is some surface oxidisation on the back of the unit. There is nothing major and nothing which detracts from the use, functions or sound of the synth. Please see photos for more details.” Click here to visit listing on eBay

Korg Polysix

” Amazingly cool Korg PolySix analog synth in GREAT condition in and out. I just had the internal battery replaced so its good to go for years. Sweet pads, strings, brass, basses and so much more. Very distinct sound that no other synth can do. Please look at all pics.. its in amazing condition but there is a chunk of the left lower side panel missing… happened years ago on a studio move. Speaking of which, its never been gigged live, studio use only. ALL knobs, keys, jacks, buttons work properly. ” Click here to search for synths on eBay

Korg Polysix

“• Used – v.g.c for the age

• Battery have been changed & new socket

• New set of tactile switches

• Pots clean all potentiometers and relubricate + bender pots

• Power supply recapped

• Fully calibrated & cleaned keyboard & inside

• Tested, all original voices in fully working order ” Click here to search for synths on eBay

Korg Polysix

“LEGENDARY synthesizer! The built-in effects are amazing – the Ensemble setting allows for a beautifully chilly string sound and there are some warm analogue brass sounds in there too. The Unison button turns the synth into a searing monosynth by combing all 6 voices on one note.
There are a couple of mods you can do to make it even better – check out Kiwisix or Tubbutec’s Polysex/Modysix.

Cosmetic damage: there is some cosmetic damage to the wood panels. There are a few scratches on the panel incluuding a large one over the sub-oscillator label (does not affect functionality in any way). There is a bit of gaffa residue.

Sound-wise, it has two issues that I’m aware of that have developed since the last time it was serviced (by well-known synth technician Simon Flinn). Firstly, when I leave it on for a long time, occasionally the knobs suddenly refuse to control the synth – the sound goes haywire and the knobs no longer change the sound. In the past, turning it off and leaving it for a while has fixed it. Sometimes opening it up and checking all the internal cables are fastened well has helped, too. Secondly, one of the 6 oscillators seems a bit out of tune in the lower registers.

Finally, a couple of the rubber buttons are a little sticky.” Click here to search for synths on eBay

Korg Polysix

“Nice cosmetic shape overall, a few light marks nothing major, but had the common battery leak issue when I got it. Mostly works now after some repairs done, but has some issues still left that will need repair, listed in detail below what all works and what doesnt to the best of my ability, tho I am no expert on these. The batt board was cleaned up and traces repaired and 4 chips replaced, which fixed many of the common issues from the battery leak, but a few problems remain. I do not know if any remaining problems are due to more probs on the battery board or something else, so it may need a new klm367a batt board, or maybe not, might be a prob on a different board or something…or all the above, dont know not an expert. A new battery was not installed, so there is no patch program memory, just random patches still in it. You can get a new klm367 board for about $200ish from a nice german seller synthronics.de who I think sells them on ebay and said it would take about 3-5 days via express shipping to usa, if you cant find the link ask me. I was thinking of getting one from him but just dont have the time anymore, and figured maybe an expert on these would be able to fix the remaining probs without needing a new 367 board. So this is sold as is, partially working, for repair, no returns.

Here is the list of what works and what doesnt, to the best of my abilities:

WORKS:

all keys work perfect, just cleaned too
all 6 oscillators including the sub osc settings
the VCO section 3 waves for saw, pw, pwm, speed
sub osc settings
tuning knob
volume knob and output settings
the mod and bend wheels
all effects in the effects section
keyboard tracking
the arpeggiator
the key modes (poly, unison, chord, hold)
All the audio outputs and jacks
All buttons and switches for banks and program #’s
(a couple of the program # buttons you have to press a little hard but all work) ”
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