Homemade 300B Single Ended Amplifier

This amp is made in the circuit of JE LABS, output is 7W／channel.

The output tube 300B is an OEM product manufacturing in China.
The output tube is a test figures were VAC (115/58) and Cayin (117/58).

Output transformer is Transcendar products.
• 3K to 8 ohms,
• Frequency Response: 20 Hz to 100 kHz
• Maximum DC Bias Current: 100 mA
• Primary DC Resistance: 300 ohm
• Primary Inductance: 20 H

Rectifier tube is 5U4, the drive tube 6SN7 and the first stage tube is Type76.

Check a 12 inch full-range speaker Vintage Philips Hum is also not at all.

I devised a wiring diagram is included directly with the public circuit.