LM1875 Super Player Edition

LM1875 is a popular power amplifier chip that is still favored by many enthusiasts until now. Different users have different power and power requirements. This circuit makes the OTL and OCL connections of LM1875 switchable through a switch. Players can try out different effects according to their needs. This circuit adopts a symmetrical design, and the power supply part uses Nichicon FW series and Panasonic FK gold series in parallel, which makes the sound more mellow and warm. Philips Aqua Blue capacitors and Nissei APS film capacitors are used for decoupling, and the two channels are independently decoupled and powered. The negative feedback capacitor uses Nichicon green robe non-polar capacitor. The listening effect is very good, the output low frequency is powerful and the sense of density is very good. At the same time, the design of this circuit board is also compatible with TDA2050 and TDA2030A and can be directly replaced, but be careful not to exceed the limit parameters of the corresponding chip. Friends who like it can give it a try.