ive been looking at the mb quart 125.4 for a long ass time gonna snatch a pair up soon , theres no other companies besides hifonics ( which is mbquart ) that makes a 125 x 4 at 4 ohms for so cheap.

Thats badass.

Just got it in and clamped it. Its very close to what it says it is and I only fed it off a stock alternator and kinetic hc1200. It has alot more settings available than I had originally expected. It has a very clean sound to top it all off. I dunno if it just me but i think the a/b amps have better sq than class d's.
Channel 5 is 1 ohm stable too
I may keep a few of these on hand, Definately worth the 300$ if not more.

my old sony deck has this too, sony call it "BBE MP"

it should restore some of the things u lose in compression, on that deck is makes the music sound amazingly better

BBE MP process integrates BBE High Definition Sound with BBE's new MP harmonic restoration function. The MP process is a technological advance developed to improve MP3 and other compressed audio signals by restoring lost harmonics. The MP process effectively adds warmth and provides a clear CD quality sound from heavily compressed material. BBE MP is being offered in addition to BBE High Definition Sound featured in premium products from Sony, Panasonic, JVC, Alpine, Pioneer, Hitachi, Sharp, Sanyo and more than 150 other manufacturers world-wide.

donnu if its the same or what it actually does, but unless its a scam its working pretty nice here

MB quart amps do rated bro :-p probably didn't have the electrical to sustain 14.4v.