I was given my MA 6100, about 4 yrs. ago, by a friend, who had been given it by a customer.
Since he isn`t in to high performance audio, but knows I am, he decided that I would have better use for it.
Of all the Mc gear I`ve owned in the past, or currently, this is my first Mc. integrated, & direct coupled (no autoformer) output stage amplifier.
After some minor work by me to replace one channel`s leaking output transistors, and checking over some work that had been done to it sometime in the past.
I checked it out to the factory specifications, then burned it in playing music for 24 hrs. on the bench, then rechecked specs. and installed it in my electronic repair shop to replace the Mc. C 33 preamp, and Crown D 150 power that I had been using for many yrs.
Well that MA 6100 sounds better than the separates it replaced, and it`s been running 24/7 since, & playing loud enough to be heard clearly in the adjoining kitchen with the door open so my caregiver/housekeeper, or myself has my all day WAV. ripped music to hear whilst in the kitchen.