Из компа выжать звук можно, установив хорошую звуковую карту.
Плеер думаю намного лучше компа будет звучать.
TDA1516CQ - 24 W Btl Car Radio Power Amplifier
TDA1519A - 22 W Btl Or 2 X 11 W Stereo Car Radio Power Amplifier
TDA8564Q - 2 X 24 W Btl Or 4 X 12 W Single-ended Car Radio Power Amplifier
TDA1565TH - High Efficiency 2 X 40 W / 2 Ohm Stereo Car Radio Power Amplifier
TDA1515BQ - 24 W BTL or 2 x 12 W stereo car radio power amplifier
TDA1553CQ - 2 x 22 W stereo BTL car radio power amplifier with loudspeaker protection and 3-state mode switch
TDA1553Q - 2 x 22 W BTL stereo car radio power amplifier with loudspeaker protection
TDA1561Q - 2 x 23 W high efficiency car radio power amplifier
TDA7375 - 2 X 35w Dual / quad Power Amplifier For Car Radio
LM2005 - 20 Watt Automotive Power Amplifier