Dating a fender amp by serial number
We have a mod to make these the same as the originals.
Early TS-808's have the Ibanez (R) "trademark" logo which some people seek.
The TS-808 and its generation have small square metal on/off touch-buttons. There were some TS-808s made in the 1979 period, mostly for other than USA markets, that came in a narrower box.
These have a bottom plate that unscrews to change the battery like an MXR pedal, no plastic battery cover. It uses two 1458 chips which are the 1st version of the low-tech dual op-amp.
Around 1982 until 1985 the Ibanez pedals were repackaged and the 9-series of effects were made.
There is really no difference, although some of these have a Malaysian Texas Instruments RC4558P chip instead of the normal Japanese JRC4558 chip.
A rare chip used was the TL4558P chip, as used in some early 8-pin IC chip Boss OD-1 pedals.
The Edge from U2 uses a TS9 for most of his overdrive tones, as do countless other famous rock and blues players.
In later years the TS-9s were put together with other op-amp chips, instead of the JRC-4558 which is called for in the schematics.
Ibanez reissued the narrow TS-808 as the "35th Anniversary TS-808" in 2014.