The reputation is good.

The function of Yajia power amplifier is relatively good, and the price/performance ratio is relatively high. In particular, Yajia's 67 power amplifier is a rare pure power amplifier with digital input (optical fiber, coaxial). Its grade at that time was the same grade as Denon's 890D. Pure power amplifiers with optical fiber and coaxial are very rare. Digital input, It has its own unique taste and high resolution. All 8 tubes are normal and can be listened to at home.