Can't tell you *exactly* what they are. Sometimes this determination is better made looking at the ends (in this case) of the chassis which you pix do not show. Is there, for example, an octal plug, esp labelled "preamp" or "accessory"? Most hi-fi setups of that era used a separate preamp and power amp, and the tendency was to use an octal plug and interconnect cable to power up the preamp. Or, it could be more of an industrial item. Or, it could be an organ power amp. If it's an organ power amp, it would be a bit rare to see, for example, an impedance select switch or barrier strip...because there's (in most cases) only one speaker arrangement. If it was an organ amp, then maybe the volume control is not especially in a "user-friendly" spot, as it is pretty much set once and forgotten about. These kinds of clues can help identify.
They certainly look like that have entirely adequate iron for what would appear to be a dual 6L6 amp. What is that metal-tube rectifier, a 5Z3?
At first they sure look like great chassis to warp into a geetar amps, but at the same time you'll be seriously space limited trying to get any kind of preamp circuitry in there. Long, narrow chassis are good to a point---once they are narrow like these, it's hard to see how you could get a row of preamp tubes in there while placing a row of controls along one long side of the chassis. Working with this typically forces the builder to put stuff next other stuff that one would ordinarily like to avoid.
You realize there is essentially no circuitry at all in those...you don't even have a phase splitter tube!
Topic: what kind of amps are these? (Read 6231 times)