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Tubes 4 HiFi is also known as Vacuum Tube Audio. Our best known product is the VTA ST70 PCB modification for the Dynaco ST-70 amplifier, that first appeared in a Glass Audio magazine article in 1989.
Tubes 4 HiFi is also known as Vacuum Tube Audio. Our best known product is the VTA ST70 PCB modification for the Dynaco ST-70 amplifier, that first appeared in a Glass Audio magazine article in 1989.