I'm willing to pay the average going rate for a used Phoenix Gold Xenon x200.4. I'm also looking for a Pioneer DEH-880 PRS.
I'm also willing to trade my PG ZX450 V2 for a x200.4 or a Pioneer 880PRS. This amp is an old-school favourite that is very versatile, and highly underrated. Phoenix Gold rates this amp at 75 watts rms X 4 (at 4 ohms). Members from the Phoenix Gold forums discovered that it actually puts out 130 - 145 watts rms X 4 (at 4 ohms) before clipping. Phoenix Gold also rates this amp at 250 watts rms X 2 (into 4 ohms). Unfortunately I haven't been able to find any tests done using 2 channels, but some people speculate that it should easily do 300 watts rms into each channel, and possibly as much as 350 watts rms before clipping.
The amp works perfectly, and the only flaw is that it's been repainted and has a slightly matte finish. It's not very noticeable though.