We sold Mac audio gear in our store back in the 1970's. We also sold ARC, Halfer, B&O, Yamaha, Maggies, Klipsch, JBL, Levinson, Linn, and more. Back then Mac would come in the stores and set up a test bench with clad blanket covering the table where the equipment brought in by customers for tested. I also toured the factory. Built quality was impeccable. Sound was also very good. (MC275)
Mac decided they needed to make everything audio. (Cassettes, CD's, turntables, Dacs, surround systems, etc) Once they started down that road, the reliability went out the window. I now consider there amps and pre-amps to still be extremely well built, reliable, and sound good (not ampung the best, but good). The rest of there products I would never purchase.