Details:

Main circuit board size: 13*20cm

Power board size: 8*20cm

The main circuit of the German Merlin Tianji phono-amplifier is tested, using the tube ECC88+ECC83, the sound is very positive, three-band balanced, high-fidelity HIFI.

There is no difficulty in welding the board, the debugging is simple (adjust the variable potentiometer B+=DC 250V), and the welding can be successful if the power is connected without error.

Using 6X4 rectifier, 6AQ5 adjustment, extremely playable, dozens of collocations, changing the tube is a taste

Package List:

1 × Main circuit PCB

1 × Power PCB

Not included any parts ！

Assembled board ，just for reference：