Published On Jul 31, 2024
Here is a demo and discussion of this 1959 Gibson GA-80 amp. Gibson included a six push button tone selector switch in channel 2 which they called Vari-Tone. 5 pre set tone settings and one position is to bypass the whole thing and engage a single tone pot. This amp has a great unique sound with 5879 pentodes as the second gain stage in both channels and no negative feedback!
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