The most effective way is to control the filament voltage of the working tube. This can be done when each of them has the same filament voltage, the tubes will have the same sound and consistent values. The reason why … Continued
Both Vacuum Tube (valve) and Transistor can be made for amplifier. They have their own characteristic, advantage and shortcoming. At the early 80’s, the development of digital audio is at the preliminary phase. People started to use transistor amplifier for … Continued
Applicable to Galaxy 34, Galaxy 88, AS-6i (KT88), AS-6i (KT66), AS-8imkIII, AS-3i (EL34), AS-6M (KT88) and Mini-2SE, etc. Please prepare a “Multi-Meter” (or DC.V Meter), a flat-type screwdriver for bias adjustment use. Below is an example of bias adjustment procedures for the … Continued