1 owner hand built Phoenix Gold Ti500.4 and Ti600.2 with Audio Control DQ-61. Equipment works and sounds great. They are are some of the last hand built Amplifiers Phoenix Gold produced. I am the original and only owner of these amps. Removed from my car about 2 months ago. Everything works. Cosmetic condition is excellent. Only flaw is sometimes the blue LEDs on the 4 channel stop working. It is repairable, I just never did it. Boxes show real world output for both amps. EQ is a current model item and includes the AC3R remote. I will also include a LPL44 for bass knob for the 2 channel along with a fused distribution block and a ground block. The Phoenix Gold emblem was laser cut by PG and matches the amplifier finish. On top of that, I will include a 12" sealed subwoofer box (if the buyer needs it). Box needs new carpeting but is still solid.