HISTORY: The time has come to part with my baby. I have owned this amp for almost 3 years now. I am the second owner of it. The original owner was from Atlanta and had the rear channels bridged to a single JL 12W3 and the front channels running a set of MB Quart components. He sold the jeep, and sold the amp to me for $600 USD. It was in absolute prestine condition. When I first for the amp, I ran my 2 infinity perfect 10's with it, both front and rears bridged @ 4 ohm. I had that setup for about 3 months before getting rid of my infinity perfects. I then had it hooked up to an MTX MXS 12" sub bridged on the rear channels, and the fronts were running a set of mb quart components. That system lasted for two months, which was the last system I had installed in my car. I then hooked it up in my ex-gf's car running an eclipse Ti 12", both front and rear channels were bridged, running both coils at 4 ohms. It was used for a total of about 3-4 months. The amp has now been sitting in my bedroom for the last 8 months, and I don't have a stereo to hook it up to. This amp has never seen below 4 ohms bridged or 2 ohms stereo. The gains have never been above 1/3 of the way. The cover has a few scratches and the ppi logo is starting to come off. Cosmetically, the amp is about 8/10 mechanically, it is 10/10 This is ppi's flagship 4 channel amp, and has been recognized for it's extreme quality. It retailed back in the day for $1499. SPECS: PC4800.2 Power Bandwidth: 4.5 Hz - 100 kHz Total Harmonic Distortion: 0.02 % Input Topology: Differential Input Sensitivity: 150mv - 12 volts RMS Input Impedance: 10k Ohms Load Impedance (stereo) 2 - 8 Ohms Load Impedance (bridge) 4 - 8 Ohms Supply Voltage 11 - 15 volts Damping Factor >500 Slew Rate >50 V/mS Idle Current: PC4800.2 - 3.0 Amps 100 WRMS x 4 @ 4W per channel 200 WRMS x 4 @ 2W per channel 400 WRMS x 2 @ 4W bridged Front - 12dB/Octave, Detented High Pass 20-5kHz Rear - Choice of 12dB/Octave Detented High Pass 20-5kHz, or Summed Mono 24dB/Octave, Linkwitz-Riley Detented Low Pass 44-315Hz RCA Outputs will be the opposite of your Rear Crossover choice. QBASS PLUS™ on Rear Channel Demensions: Length - 23.72" Height - 2.25" Width - 8.9" Max fuse rating: 80 Amp PICTURES: more pics available upon request PRICE: $500 Do not have original box, but comes with original ppi manual, power plug and speaker plugs.