Quality TDA2030A based amplifier from UTC. Practice shows that this company is engaged in the production of radio components under license, the quality of which is comparable to the original.
In addition to the high-quality chip, only high-quality components are used in the amplifier.

By default, the circuit is assembled using a dividing capacitor at the input, but in most cases it is possible to do without it, with a constant output voltage not exceeding 0.015-0.020V, which is quite normal. And the released 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 dividing capacitor; 2 improves the quality of bipolar electrolyte in NF. This is reflected in the sound by increasing the detail on the HF and widening the band to the Bass.
The board provides both connections:
1. Connection with a capacitor - the signal is sent to the contact (IN), the jumper (J) is soldered on the back.
2. Connection without a capacitor - the signal is sent to the contact (IN '), both jumps (J') are soldered on the back side.
Premium version available. It differs in the installation of precision, super-quality components:
Isolation Capacitors - Epcos or WIMA
Resistors - Vishay DALE

Complete with rack with M2 bolts for installation in the housing, as well as mica gaskets, insulating washers and thermal paste for installation on the radiator.

Supply voltage +/- 6V - +/- 18V
Power depends on voltage and current 6-18W