this before & got the advice to switch speakers.
Have you tried the speakers without the external amplifier?
This would eliminate it as a possibility
How about trying another set of speakers?
Could be the stereo mini plug is wired wrong on your speakers.
I doubt there is anything wrong with you AC97 Audio
When outputting audio from my motherboard's built-in sound, the stereo is reversed, and I don't understand why. The sound is sent to an external amplifier I have set up, but the speakers are definitely plugged in the correct way, so that is not the problem. I've tried updating the driver (Realtek AC97) and that hasn't solved it. Is there a setting I've missed? I realise that I could switch the speakers round from the apmplifier but this would be rather inconvenient as other devices plug into it as well.
Thanks in advance,