I had a USA-2200F and a USL-4085
The 2200F killed several of my Clarion X2 subs, it's been in the closet for 2 years. I replaced it with a T-757
The 4085 I didn't like so much aside from looking really really nice with it's etched glass that lit up blue. I suppose it was really cheap though and it did amplify four speakers. I replaced it with a bottom of the line Phoenix Gold QX2180 and a T-407 which I later got rid of too (but now I wish I had it back
)
