New Aurora Sound Amplifier.

Shinobu Karaki writes: "Finally, a new product with a satisfactory Aurora Sound was created. with various aspects of physics, sound, performance, features, cost, etc."

"I struggled mainly with the AMP gain, phase compensation, offset ratio, NFB content, and ground connection. In the last phase, I changed the CR parts many times and finally found the optimal point. I changed the power transformer 3 times, the output transformer 2 times, the component layout 4 times, the chassis 4 times, and the PCB 5 times. I have had the most difficult time so far. Integrated AMP is the most difficult. Now I just need to assemble the exterior."