The first electronic amplification of sound was done with Vacuum Tubes. We have pre-amp, power and rectifier vacuum tubes among other types in New Old Stock from the golden era of American & European manufacturing as well as current production tubes from today.
Vacuum Tube - 6550A, Valve Art
Octal power tube (Max Plate Watts = 42W)
Vacuum Tube - KT88, Valve Art
Octal power tube (Max Plate Watts = 42W).