The synth will ship well wrapped and packed and insured.

This synth was purchased from its previous owner back in the mid-2000's. It's got the latest stock Oberheim firmware. I haven't loaded any of the custom, modified 3rd party firmware that many chose to install. I'll leave that up to you to decide.

The synth has never been out of my home, smoke free environment, and looks it. There are the very minimal amount of blemishes, and I've tried highlighting any of those in the pictures. The keyboard/keybed is in very good, if not mint condition. There is some very, very slight scuffing on the right top edge/corner looking at the unit while standing at the keyboard.

The battery was replaced at some point with a detachable battery holder. It appears to be from 'Analog Classics' website '/product/oberheim-matrix-6-6r-battery/?srsltid=AYCX9vKgpsa_qkj7IWLffk15_L1PwaVXDY3VwXR5KWsunU5zm7InAAY5', titled 'Oberheim Matrix 6, 6R Battery Replacement'. The battery was replaced with a new one and tested.

The membrane switches are all solid, no cracks, I've exercised them all, and none seemed to stick or miss, not that I could see. These were tested while the patch bank was downloaded and tested.

The tiny LCD backlit interface screen is bright and clear, as seen in the pictures.

The rear panel connectors are all solid and working (MIDI I/O, audio I/O, pedal I/O) (I could not test the pedal I/O, I'm assuming they work).

The Oberheim 'signature' paddle controllers are solid, not skipping or sticking. The pitch bend paddle obviously works. The modulation paddle is not often assigned in the installed patches (patch 9 is one and it works), but I used a midi monitor on my laptop and the modulation paddle does output a stream of midi messages as its exercised, so it's tested and appears to be working.

The synth was totally reset and a suggested patch bank called 'Oberheim Matrix-6 Factory Stock Patches Volume 2' was installed. Volume 2 refers to the official second volume of factory stock patches originally distributed on cassette tape in 1986. some references refer to it as a 'best of'.

I'm also including a USB thumb drive with as many of the original factory patches that were distributed on cassette tape and then converted to SysEx for download to the synth as I could find. There are about 11 or 12 banks included. The thumb drive will also include an open source bank manager called 'KnobKraft_Orm' (there is a website for downloading and documentation, aside from its GitHub repository) that actually works pretty well for handling patch banks for an assortment of synths, Including the Matrix-6. This patch bank manager works quite well with the Matrix-6 for loading and backing up patches.

Includes power cord and original manual. I'm also including the USB-to-MIDI adapter I used to reload the patch bank and perform the testing, so I know this adapter works.

Sold as-is.

Shipping within continental US only. Buyer pays shipping.

Feel free to contact me with any questions, or for more pictures.

If you're looking at this, you most likely already know the specs this synth has.

From Vintage Synth -- quote:

"The Matrix 6 was one of the last few synthesizers from Oberheim to come out during the mid-eighties following the classic OB-series. The Matrix 6 utilized high-tech but less expensive digital and midi features and still retained a totally analog sound. It did this by using DCOs (digitally controlled oscillators) to provide stability, programmability and more. All the Matrix synthesizers featured Matrix Modulation which allows for extremely wild virtual patching for almost unlimited range of sounds and modulation capabilities!

The Matrix 6 is a very popular synthesizer today because it offers access to the legendary sounds and power of the Matrix 12, though not as meaty but at a fraction of the cost. The Matrix 6 is also like the Xpander, but with only 6 voices of polyphony and slimmer programming. Each of its 6 voices has a pair of DCOs, a low pass filter, 2 VCA's, 3 envelope generators, 2 LFO's, and 2 ramp gens for a variety of complex analog pads, basses and sounds.

The programmability is vast, but it can be very tedious. As was the growing trend in synthesizers during this time, knobs and sliders were replaced by just a few membrane buttons and a simple data slider. This is accompanied by gobs of programming and patch data written across the face of the unit. Fortunately Midi SysEx is fully supported so you can get patches on-line and transmit them into the Matrix. Access, makers of the Virus, used to make the Matrix Programmer which gives you much more user friendly hands-on controls too. And software editors such as Unisyn make graphic editing possible for much easier programming."