High-quality amplifier based on UTC TDA2050. Practice shows that this company produces radio components under license, the quality of which is comparable to the original.

By default, the circuit is assembled using a separation capacitor at the input, but in most cases you can do without it, while the constant voltage at the output does not exceed 0.015-0.020V, which is quite normal. And the freed-up high-quality capacitor can be used to bypass the bipolar electrolytic capacitor in the NF circuit. This inclusion gives a double positive effect: 1 eliminates the influence of the input isolation capacitor; 2, the quality of the bipolar electrolyte in the NF is improved. On the sound, this is reflected in the increased detail on the treble and the expansion of the band on the bass.
The board has both connections:
1. Connection with an isolation capacitor - the signal is applied to contact (IN), on the back side a jumper (J) is soldered.
2. Connection without isolation capacitor - the signal is applied to the contact (IN '), both jumpers (J') are soldered on the reverse side.
Premium version available. It differs in the installation of precision, super-quality components:
Isolation Capacitors - Epcos or WIMA
Resistors - Vishay DALE

The set includes racks with M2 bolts for installation in the housing, as well as mica gaskets, insulating washers and thermal grease for mounting on a radiator.

Supply voltage +/- 15V - +/- 28V
Power depends on voltage and current 15-25W