Power amplifier tube: 2N3055 ^^
Working voltage: DC 12V-35V (corresponding to 9-26V transformer, power needs to be greater than 100W) ^^
Output sound power: 10-15W ^^
Size: 100*78*36MM. Angle aluminum 2 fixed hole distance 53MM ^^ The default is 24V, 1.2A, which can be used for current flow. The higher the current is, the more heat is recommended. ^^ Choose a 3-5 inch full-range speaker, and you can choose a full-range speaker with a 5-8 inch diameter. You can also choose a speaker with a power below 120 watts and below 8 inches. ^^ 1 Pair 1969 Class A Power Amplifier Board 10-15W HiFi Audio Amplificador 2N3055 PCB Assembled Finished board