Dating old gibson amps
It’s doubtful whoever was designing Gibson’s amps at the time would have chosen such a circuit for a high-fidelity amplifier (anybody have one of these black-covered models? Also like the first E-150 amps, the first 100s got their juice from an 80 rectifier, came fitted with two parallel inputs and had no controls in the circuit.A fuse was the only other “feature” of this bare-bones model.“No longer is the electric Hawaiian Guitar restricted to professional players – here is a genuine Gibson instrument that costs only 0, complete with instrument, case, amplifier with slip cover, and cord.” So introduced in Gibson’s Catalog X of very late 1936, the EH-100 Hawaiian set cost a third less than the company’s EH-150 set, which by this point had the updated six-tube chassis and “Echo” extension speaker.
It’s interesting there was no tone control on the first EH-100 guitars either, though this would soon change as the last of the black-finished 100 Hawaiians had the modern two-knob arrangement.
1937-’38 (Catalog Y) By the release of the next catalog (which were being cranked out annually during this progressive era), Gibson offered both a new look and a new circuit for the now $110 EH-100 set ($55 for the amp alone).
Covered here on a year-to-year basis, it’s evident Gibson not only changed the EH-100 amplifier’s look annually (think automobile manufacturing), but the engineering department was continually upgrading the circuitry.
1936-’37 (Catalog X) Offered on its own at $50, the first EH-100 amps were promoted as the mate to the new EH-100 Hawaiian guitars.
Again, two inputs were standard, but only one was for the instrument, with the second specified for use with a microphone.