E-mu Keyboard

This appears to be the other have of the previous post's auction. According to this auction, this is "the world's first commercially produced electronic musical instrument that contains a microprocessor"

Details
"the world's first commercially produced electronic musical instrument that contains a microprocessor. If you're interested, it is a ceramic Zilog Z80 microprocessor. This system is the one Gary Hall wrote about in an editorial in Electronic Musician magazine in 1991. You are bidding on the whole system, and this sale takes precedence over the pieces listed separately here on eBay. The four pieces are: the E-mu 4060 keyboard serial number # 1, the E-mu main cabinet including 11 filters, three oscillators, 6 VCAs, 4 envelope generators, two preamps and filter controller, the Oberheim main cabinet including 5 SEM synthesizer modules and an 8-voice programmer, and the one Oberheim SEM in a separate single cabinet.

The keyboard does not work. It is merely a historical oddity at this point. All the rest do work last time I tried them. I'll focus on the keyboard here and you can search for the other items and read about them separately. I decided to buy an E-mu in 1976. At the time they told me (Scott and Dave) they were coming out with this new keyboard that contained a microprocessor. That's how I ended up with serial number # 1. If you look at the picture, you can see the guts of the keyboard: there's a main circuit board and a large memory board. The memory board is 128K - that's 128 1K memory chips!! This board doubled as a space heater!! In between you can see a little memory board. In 1991 I replaced the 128K board with a 256K chip - one chip replaced the 128 chips and doubled the capacity! The main board is a terrible example of design-for-manufacture (sorry Dave). It would be difficult to repair, all I know at this point is that the negative power supply is very unhappy, but it could be simply a bad tantalum capacitor. Since the keyboard does not have any kind of touch sensitivity (and never did) I think it is not really about using as a musical instrument, strictly a museum piece at this point.

The total shipping weight is 170 lbs in four pieces, but since the main cabinet is 80 lbs, it would have to go DHL."

via Kaden