The schematic shows one channel of a stereo amplifier, and the power supply is sufficient for both channels. Transformer T2 supplies the voltages required for the vacuum tube plates. Selection of the ...

Schematic of a class AB tube power amplifier with negative feedback. A typical tube power amplifier is a class AB with feedback. In this, there is a gain stage that also functions as the ...

If you ever wanted to build your own tube amplifier but you were intimidated by working with high voltages, [Marcel]’s low-voltage tube amp design might spark your interest. The design operat… ...

The stunning 8.5 x 21.5 x 12-inch (216 x 546 x 305 mm) amp features four KT88/6650 power tubes, three 12AX7A inputs and phase inverters, and four 12AT7 voltage amplifier and drivers - all of which ...

The power supply features a specially designed, shielded 120W transformer. The transformer is combined with an independent, low-noise voltage amplifier, stage voltage regulator circuits for the left ...