I've got a Eclipse 55040 headunit and Eclipse 22010 EQ for sale. Still in great condition as you can see from the pictures. I don't member to much about the stats, except for that the 55050 has a 8v pre-out and the 22010 has a 10v pre-out. The EQ is 7 band analog adjustable and has a total of 3 outputs (front, rear, subs/full), and 2 inputs. Asking $200 + shipping for the headunit and $125 + shipping for the EQ. WHen I purchased these, the headunit was worth about $600 (2nd highest model Eclipse offered), and the EQ was around $250 (highest moddel Eclipse offered). I'll sell both for $300 shipped. Pictures available here

EQ 1
EQ 2
EQ 3
Headunit 1
Headunit 2
Headunit 3

If interested please email me at illusion_lighting@hotmail.com