Ibanez 850 Overdrive

This is a compact, FET switching EH Big Muff Pi! OK, I haven't checked all the little values and all, but overall that's what it is. Very neat box.

Supposedly just made from 1980-81 according to: http://www.tonehome.de/, when it was presumably replaced by the Ibanez Overdrive II, which is an op amp into passive diode clipping type circuit.

Ibanez OD-9? I've read that this may have been issued only in France, and briefly, as the "Ibanez OD-9," not to be confused with the later Maxon OD-9 which is a TS-9 reissue.

Vintage Ibanez OD-9 pedals appear to command a high dollar value on the used market.