Korg PS3300 with MID...

Servicing Status:

Full service by KSR has already been carried out in August 2021, so this Korg PS3300 Polyphonic Modular System is ready for sale now.


What can we say other than…wow!  How rare are these to find, and then to actually find one that’s been fully serviced and available for sale! 

We’re very proud to be able to offer this magnificent instrument to any discerning buyer and it’s just had a full service from our trusted & expert vintage synth restorer & partner, Kent Spong at KSR.

Background Info:

We purchased this PS3300 with the intention of keeping it for our own collection, but other priorities have meant that we are now letting it go.  We purchased it from a very experienced vintage analogue synth collector in Japan and had it imported over to us in the UK in April 2021.

The person we purchased this from in Japan had owned it since 2012, but he did not have any prior history on the PS3300, but it’s safe to assume it had never left Japan since it was manufactured.  The serial number is 780105, so this might suggest a 1978 manufacture date, but we cannot be certain.  The was likely produced for the local Japan market, hence it only operates on 100~117V @75W.  We’ve included a picture of the serial plate below.

Cosmetic & Operational Appraisal:

As you can see from the pictures we have taken, the overall condition is very good, the cabinet particularly so, stunning!  The anodised metal control surfaces are showing some wear/deterioration in places due to age, which is typical with many Korg synths coming out of Japan of this era.  It would be perfectly feasible to have all the control surfaces restored to look as-new, but we think it’s more important to persevere these extremely rare historic instruments in their original condition, but that’s an option we’re happy to discuss with any potential buyer as we can get this kind of specialist work carried out in the UK, subject to quotation.

Also included in the sale is the Korg PS-3001 (Honda) Cable to operate the PS3010 Keyboard Controller.  The original power cable is also included of course, plus a step-down supply.

A Kenton MIDI has already been fitted into the PS3300, and like a few we have seen, the kit has been implemented through the pedal DIN inputs on the front panel.  You will note from the pictures that there are some stickers that show the input to access the MIDI kit function.  We think this is a very sympathetic way to implement MIDI into these rare & valuable systems as it can easily be reversed/removed if 100% originality is preferred, so no legacy of the kit having been installed would be left.  The downside is you can’t access the pedal inputs if you happen to own a Korg PS-3040 Dual Pedal, but as mentioned, the MIDI can be removed without affecting the authenticity of the PS3300 in any way.

This Korg PS3300 operates on US 110V. but can be operated in the UK/EU on 220V via the external step-down power supply which is included in the sale (pictured below) and we can supply a high-quality colour PDF copy of the user manual. The instrument is sold with a 3-month warranty, please see our website for full terms & conditions. 

The service carried out by KSR in August 2021 covered all the normal stability and calibration checks, full function testing and card-edge connector inspections etc.  There was actually very little to do on the PS3300 as it was last professionally overhauled by FiveG, in Harajuku, Japan,  in November 2020.  Here is a summary of the work that carried in in the service they conducted:

Exchanged one card socket

Cleaned all card sockets

All switches cleaned

New signal generator FEET x29

Three new condensers for power supply

162 FEETs replaced across the synth

Constructed 2SK208-carrying adapter cards to replace 2SK30A’s

Replaced 36 tantalum condensers in envelope generators

Replaced 36 generator trimmers

Unit 2 waveform control checked and diode found faulty -> replaced

Unit 3 photo-coupler HTVP873DX3 replaced with NSL33-007

23 card connectors reinforced for long-term durability and integrity 

Total, 60+ hours work.

Ordering From the EU (Post 1st Jan 2021): 

Now the UK is no longer a part of the European Union, we all have new levels of bureaucracy to deal with when you buy equipment from any business in the UK, for onward delivery to any destination in the EU.  In order for us to be able to ship to the EU now, we will require you to supply an EORI number if you are buying from us as a business, which will be provided in the Commercial Invoice that goes with the consignment.  Private individuals purchasing equipment from us will not require an EORI number but the goods will still be subject to VAT, which is charged by your own countries Customs, to clear the goods, so we now do not charge VAT on our purchasing invoice. The VAT rate applied upon import into your country will be set by your own country applicable VAT rates.

Packing & Shipping: 

We can ship this instrument worldwide, although the packing, shipping & insurance costs are not included in the sale price below, so are subject to quotation.  There may be some short delays in getting the custom-sized materials produced for shipping, although courier companies all seem to be operating normally.  We are happy to discuss your requirements so please email us if you have any questions on the logistics and/or need a quote.

Sales Price: £65,000 GBP.

Availability: This Korg PS3300 is now SOLD – the listing was updated on 18th October 2021.

Click on the thumbnail for a higher resolution photo of the actual Korg PS3300 for sale.  If you require specific pictures not already featured of the instrument then please contact us so we can try and accommodate your request but there may be a short delay in getting this done for you as the instrument is currently in secure storage.