via this listing
According to the listing: "Vintage ARP 2600 w. 3620 Duophonic keyboard very good condition.
I sell my ARP 2600 with its 3620 duophonic keyboard. I used it in Jean-Michel Jarre's studio when I worked with him, but only in his studio and mine. I'm running out of space to keep it.
Not only is it in excellent external condition, as can be seen from the photos, but it has also been fully tested and is perfectly operational.
All sliders, including those of the keyboard, have been replaced by original new ones, with the original caps (no one missing). The keyboard contacts have been cleaned. The original tolex was left untouched as it is still in good condition.
White pencil setting marks can be seen on the photos. They have since been removed.
The serial numbers of the instrument and keyboard are identical, since both were purchased at the same time.
I'm supplying by separate shipment 24 patch cords, the power cord, the original 2600 and 3620 user manuals, plus a collection of original blank patches.
The nameplate indicates a 110 V power supply, but the instrument was set to 220 V at the time of purchase, in accordance with the instructions in the Service Manual. It has been used this way since the beginning. It's easy to switch back to 110 V if required."
