Took out the amp1 in my 2005 9-3 because the speakers seem to cut out occasionally which then shuts off the radio and then can't hear the turn signal either, but still
Fixed my radio on my 03 saab 9-3 (by replacing amp) - YouTube
saab 9-3 aero 2005 amp and speakers help. | Saabscene Saab Forum - Saab Technical Information Resource
Saab 9-3 Radio Amplifier AMP 1 AMP1 10 Minute DIY Bypass Kit - NO SEAT REMOVAL!! | eBay