I bought an mb quart onx1.1000d last year not expecting much but my rubicon quit on me and I was on a tight budget. Surprisingly the amp put out clean rated power and hasn't had any problems even with abuse. I live in Arizona where the temps get up to 115 and my rubicon didn't last but the mb quart has. For a supposed crappy amp I can't complain. Technology has enabled companies to give a decent product at an affordable price. they may not have the best sound quality but the reliability of cheap amps is better today.