A high-quality amplifier based on the best-in-class and not only ORIGINAL LM1875 microcircuit. A practical comparison of this chip showed that it easily outperforms not only its direct competitors (TDA2030A, TDA2050), but also such "best sellers" as the LM3886 and TDA7293. The amplifier plays at the level of vintage "" STK "" microcircuits or correctly assembled "" Lanzar "". If you listened to LM1875 and did not note the quality of its work, then this is a fake, which is 90% on the market.
The only drawback of this chip is its relatively low power (up to 25W).
In addition to the original microcircuit, the amplifier uses only high-quality components.

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.