Details:

Use imported original audio highpower transistor

Use MKP metallized polypropylene capacitor for audio.

Use low noise audio signal tubes BC546B, BC556B, and audio special drive tube KTB1369 KTD2061 as the pre-drive.

Four 2SD718 original power tubes per channel are used as current output tubes.

8 ohm load can output 100W power (+- 42V DC voltage)

Specifications:

Working voltage: DC+/- 15V to DC+- 50V

Output power: 100W 8R (DC+/- 42V)

Voltage GAIN: 34 times

Input sensitivity: 1.2V 100W RMS 8 Ω

Signal-to-noise ratio:>98DB

Distortion:<0.02 THD 1K HZ 10W

Quiescent current IQ of output stage: about 30MA/1 channel

PCB size: 96 * 51MM

Note:

Diy Kit：all parts need buyer to solder it ！

Assembled Board：have tested it well ！