Briefcase computer updated
I decided to add a stereo amplifier inside the case. Sound comes straight from motherboards front panel connector so i can use either amplifier or normal 3.5mm plug for sound.
I built the amplifier, modified right size heatsink from old P3 heatsink, cut hole for molex and made a break-out box for terminals.
Yay ! It sounds fantastic and if needed it can also whip up hell of a volume :)