mc7100

Hi to all. Brought my MC7100 for after purchase service check. The price for check in was right and they just found out a bias problem that was solved in timely manner . No extra charge no stories. Like the transparency and honesty. no associated to them, just give my feedback to a Mac Service...

Well, after three weeks of listening to the MC7100 amp I purchased, I discovered that the Power Control circuit does not work. Looking at the schematic I see that the input power goes through a relay controlled by a Triac with an opto-isolator gate. In the normal ON position the Triac is...