The from Taga Harmony belongs to the family of hybrid stereophonic power amplifiers. The power amplifier is a device that accepts the signal from the respective source (cd/dvd player, turntable, radio, etc.), after it has passed through a pre-amplifier. It then amplifies it properly and transfers it to the speakers for playback. For this reason, power amplifiers usually only have the on/off button. In this case, it operates with a combination of tubes and transistors, which is why it is hybrid. It has a phono input.