Korg Poly 800 Reversed Keys Version with Moog Slayer Mods

“Vintage Korg Poly 800 8-Voice Polyphonic Synthesizer with Sequencer & Chorus

Great Condition considering age – Reverse Keys Edition.
All sliders, buttons functional and LED display bright.
“Moog Slayer” Resonant Filter retrofitted – wouldn’t exactly call it a Moog Slayer compared to my Voyager or Grandmother but it adds character.
Original Carry Case that has seen better days but protects the synth nicely!
Print out of manual and patch sheets as shown.
Comes with aftermarket matched PSU.

I am selling as “for parts or not working” as the headphone out is quiet and the synth did not initially hold patches until I changed the internal battery.

The main Left and Right outputs are fine.” Click here to visit listing on eBay

Korg Poly-800 with Moog Slayer Mod

“Korg Poly800 with mods
-Data entry knob
-battery backup mod keeps patches when no power is present
-Moog Slayer mod (filter control)
-polyfm mod
-custom glow in the dark paint, knobs and (nonglowing) labels
-glow in the dark chicken head knobs

Knob on left is vco2 filter mod (poly fm), middle knob is filter cutoff and right knob is speaker destroying moog slayer filter resonance.” Click here to visit listing on eBay

Korg Poly 800 with Moog Slayer Mod

“The Korg Poly 800 for sale here has been completely cleaned and restored to perfect working condition. All keys contact and rubbers have been cleaned and working.
A new battery installed. The C Cell battery compartment has been disabled so no more worries about acid leaks, as the new battery retains all the patches.
Moog Slayer mod gives you Frequency and resonance control that sound GREAT !
CV control input jacks added allows external control over Freq-REZ.
12/24 DB filter selector switch and a FM control. With these mods and the synth restored its now an even greater synth. Korg should have built it this way because with these mods the synth is AWESOME !” Click here to visit listing on eBay

Korg Poly 800 MKII with Moog Slayer Mod

“Korg Polly mk2 with Moog slayer mod. Comes fully working. Generally the condition is good but, it is old and does have signs of use. There is also a faint postcode that has been written with what looks like a security marker pen, but is hardly noticeable.

It has the Moog slayer mod fitted. Filter and resonance pots. This thing is a beast and it is advised that you used a limiter as you could damage your speaker (or your hearing) if it’s played really loud. But you have the ability to dial it back so it’s not so crazy.

It’s got character this synth as is great for bass and ravey stabs and has a chord memory function. It’s a reluctant sale but I need to mix things up in the studio and I’ve used on loads of tracks already.” Click here to visit listing on eBay

Korg Poly 800 with Moog Slayer Mod

“For sale is a korg poly 800 synthesizer with Moog slayer mod. works and is in good condition (missing a few screws but doesn’t effect play) also missing power adapter does have batteries. I never got around to doing the battery back up MOD so if the batteries come out you will have to reprogram settings which isn’t very difficult. purchasing a 9 V DC adapter is a good idea.” Click here to visit listing on eBay

Korg Poly 800 with Moog Slayer Mod

“It’s a Poly-800 with the notorious ‘Moog Slayer’ and ‘FM-800’ mods — as seen on Wikipedia! And it comes in a hard shell case – Forge By Anvil. That alone is worth the price of admission!

It’s battery powered! It has pegs for keytar action! It has the programming instructions laid out on the front panel so you’ll never lose them!

Tested & working great. Comes with original manual and power adapter.”
Click here to visit listing on eBay

Korg Poly 800 with Moog Slayer Mod

800mods “I have a Korg Poly 800 factory restored and refurbished (by Chris at thisoldsynth.com) with a new internal battery and two mods added. Description of mods from Wikipedia:

There is a modification that adds two knobs to the VCF, increasing the filter’s range and expressiveness, known as the Moog-Slayer filter modification; the FM-800 filter modification which adds a pseudo FM control to the filter; a modification for external audio input; and some users have added a switch to control the filter slope, adjusting it from a 4 pole (24db/oct) to a 2 pole (12db/oct).

As you may have already read, the Poly 800 is a paraphonic analogue synth (all but the DCO’s, which, if anything, ensure that the oscillators stay stable).
Without the mods the keyboard is fine, but with these additions, the instrument can attain a decent range of expression.
A great synth, with multiple applications, the Poly 800 is one of the cheaper ways to get your hands on that analogue sound. ” Click here to visit listing on eBay

Korg EX-800 with Moog Slayer Mod

korg ex800 “This has been safely racked up in my studio for the last 5 years but it’s ~30 years old and the cosmetic condition reflects this.

Good points:
Rack ears included, these seem to be quite rare.
Memory battery replaced – if it dies in 30 years time you won’t have to do any soldering, just snap another battery into the holder!
Moog Slayer filter mod – real time hands-on control of the filter cutoff.
FM-800 filter mod – when turned up gets some FM-like sounds and makes the whole synth a lot dirtier and more exciting.

Bad points:
One button missing (doesn’t affect operation).
‘Resonance’ control of Moog Slayer mod doesn’t appear to do anything (middle extra pot).” Click here to visit listing on eBay

Korg Poly 800 with Moog Slayer Mods

p800 “Up for auction is a Korg Poly 800 Model PS-800 synthesizer with the moog slayer and FM mods. S/N is 024618. I bought this on ebay earlier this year with non-functioning DCOs. I replaced one logic chip and the internal battery and got it up and running again. I also found a little knob to use on top of the joystick as the original was missing. It is missing one rubber foot on the bottom and does not come with a power supply. I really love this unit and would like to keep it. However, the home studio is getting a little crowded and I’d like this to go to a home where it will get some use. My home studio is non-smoking and the unit looks good. Unit is tested as best I could. I could not get the tape/patch interface to work, so assume that doesn’t work. Also, I loaded up a couple presets by hand, but since the process is fairly laborious, I left it to be finished by the next owner. So when you turn it on, you’ll get a lot of empty presets until you program a sound in there. Due to the age of the unit, it is being sold as-is. If you own other vintage gear, you’ll understand why. This thing is from the mid 1980s. The dark brown case with teal trim will testify to that!

Now let’s be perfectly honest, there is NO WAY this thing sounds like, or is better than, a Moog. It’s not a bad filter, but it’s not a transistor ladder filter. It’s just a fine average analog low pass filter. How the slayer mod works is you have to program the Poly 800 filter’s freq and Q to maximum values. The CVs then are attenuated back by the added pots, so you’re essentially tweaking the freq and Q back to normal levels, then opening up the filter or increasing the Q back up to the preset value. Still, it works better than messing with the programming menu. The FM mod adds DCO modulation to the filter to dirty up the sound. I really didn’t use that much but it was an easy mod to add. Rest assured, all this repair and mod work were done by someone who has spent the last 38 years of his life designing, modding and repairing electronic music equipment, so it’s done right!” Click here to visit listing on eBay

Korg Poly 800 with Moog Slayer Mod

p800” Up for your consideration is a fully functional Korg Poly 800 synthesizer with several modifications that enhance the functionality and make this unit a fine candidate for the central piece to your music production environment. Modifications were professionally installed by experienced and skilled hands and are described below. I’ve modified a good handful of these and this particular machine is in the best cosmetic condition I have ever seen. Absolutely like-new!! Original Korg power supply included.” Click here to visit listing on eBay

Korg Poly 800 with Moog Slayer Mod

korg poly 800 “Korg Poly 800 Analog synth.
Generally good and clean, all works with the exception of the sequencer which I can’t get to work. Seems like it will record the notes but not play them back.
The usual scratches and wear, and a small piece of plastic missing from one key underneath.

I’ve fitted a coin cell inside to retain the patch memory so you don’t need the D cells in the back.
I’ve also carried out the Moog slayer and FM mods as described here: http://synthmod.net/korg/moog_slayer/
All mods have been carried out to a good standard … I have a lot of experience soldering 🙂

The synth sounds great, especially when you hook it up to an external sequencer and start playing the freq and resonance controls of the mod. ” Click here to visit listing on eBay

Korg Poly 800 with Moog Slayer Mod

“Ich Verkaufe hier meinen “KORG POLY-800″ mit Filtermodifikation!

Der Poly-800 wurde 1984 vorgestellt!
Ein 8-stimmigen Analog-Synthesizer mit 64 RAM-Speicherplätzen,
ein eingebauten Step-Sequencer und
mit der damals brandneuen MIDI-Schnittstelle.
Darüber läßt sich das Instrument auch als Remote-Keyboard umhängen. Super Cool!!!!

Gerät funktioniert einwandfrei! Leider verliert das Teil seine Speicherplätze ohne Batterie! Da das Gerät ohne Batterien verschickt wird, müssen die Speicherplätze erst neu von Kassette geladen werden! Richtig gelesen! Aber es geht auch einfacher… ihr bekommt die Kassette als WAV-Datei.

Der Zustand ist dem Alter entsprechend sehr gut, keine großen Kratzer, keine ausgeschlagenen Ecken, ganz wenig Schmutz!
Nachträglich wurde eine Filtermodifikation eingebaut, um mittels zweier zusätzlich Potis Cutoff & Resonance bedienen zu können!” Click here to visit listing on eBay

Korg Poly 800 with Moog Slayer Mods

“Korg Poly-800 Vintage Keyboard Synthesiser w/ Moogslayer and FM-800 mods

8 voice poly – 2 DCO’s per voice.

24db/oct Low pass filter

Sequencer, midi In/Out/Thru, 64 patch memory

49 key keyboard.

This unit has been serviced and is fully functioning. It has a new battery installed so that memory will be retained for years to come. Cosmetically the unit is very clean, no noticeable scratches or damage.

Additionally, this Poly-800 has had the Moogslayer and FM-800 mods professionally added. These are controllable by 3 added knobs – Filter cutoff, Resonance, and FM – where the filter is modulated by the Pitch of the DCO. These hugely extends the functionality and play-ability of this synth. It actually turns it into quite a powerful machine with these mods added, capable of producing very wild levels with the filter in full oscillation and the FM mod active. Very fun to play around with!!” Click here to visit listing on eBay