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1962 Geloso 227a tube amp - PART 2 recapping
Geloso 227A: PART 3 - modding for Marshall gain
1963 Geloso G227A tube amp: PART 1 first inspection and fire up
1963 Geloso G215-AN tube amp part 3: modding the phase inverter filter
Geloso G215AN - replacing the old butterpack capacitors
working geloso
BEB #42: Vintage Tube Amplifier Geloso G.3227 Teardown Röhrenverstärker
1963 Geloso G215AN tube amp: experimenting with bias & negative feedback
1961 Geloso 215 Tube Amp - another test drive
Veteran Interview - John Geloso
1961 Geloso G215AN - presence control - DIRTY
Geloso G.3215-A
