On Bonneville'* with the Premium sound system, what exactly does the gain slider thing do? Is it a type of amp, or more of an EQ sort of thing? Never could actually figure out what this thing does. alls it seems to do is add more crappy bass. lol.

It should be boosting the signal in the headunit preamp before it sends it to the power amps(isnt that what the volume **** does too though??? ). I tried it on the SSEi I was test driving and it didnt seem to have much affect.

On my 90SSE, you can really tell the difference. It acts like the loud button on the head units. It'* more of a bass boost but adjustable.

on mine there is hella lot of Bass when i turn the Gain up

That'* exactly what it is. There'* a seperate bass amp under the center console. This pot controls the bass boost to the rear deck speakers only.

It'* a subwoofer. IMHO, it doesn't do a whole lot to improve broadcast music, but if you're playing a good CD, pushing it up about 1/3 of the way sounds good, plus it makes the mirrors vibrate.

Go much beyond 1/3 of the way, though, and it just gets muddy...

-- Andy