RPM-4200 is in perfect condition, I used it for about 2 months then put it in a box. I have the bass boost knob, and pretty sure I have the speaker level input connector. Might have the manual, but no original box. Specs are 4x50W @ 4ohms, 4x75W @ 2ohms and 2 x 150W bridged @ 4ohms.
$100 shipped.
$100 shipped.