This version of the pre-plantation reason:
"1" When the fans use mobile phones, MP3 players to do the source, the signal amplitude is relatively small, can not make full output LM1875, there is a sound volume is not open enough in the end, plus the pre-level can be compatible with all small amplitude output devices. "2" increased its pre-level, its music dynamics is very loose, and the music details can be significantly improved. This enhances the texture and thickness of the music.
Component list:
The main chip: original disassemble LM1875T package
Op Amps: Texas Instruments TL082
Main filter: cash Nichicon
Input coupling: Panasonic Audio FOR AUDIO
Signal feedback: ELNA for audio
Resistance: all 1% accuracy metal film
Rectification: 8A full-bridge
Protection Relay: Japan OMRON {Omron}
Horn protection chip: upc1237
![](https://ae01.alicdn.com/kf/HTB1.8Unl1GSBuNjSspbq6AiipXax.jpg)
![](https://ae01.alicdn.com/kf/HTB1DqAbl25TBuNjSspcq6znGFXaL.jpg)
![](https://ae01.alicdn.com/kf/HTB1cp0hmnlYBeNjSszcq6zwhFXap.jpg)
![](https://ae01.alicdn.com/kf/HTB1.p65l7OWBuNjSsppq6xPgpXaO.jpg)