It is very sad to see this wonderful sounding product suffer due to the very poorest imaginable customer service.
I have owned an M3A and now own an M3B. I also went through a very long wait with many ignored phone calls and many broken promises to get my M3B.
I have always used the factory tubes and in about 25 years of use between the two preamps, have lost but one single tube.
I hope my money, my wife and my M3B outlive me. If my M3B dies, I shall regrettably look elsewhere.
I have owned an M3A and now own an M3B. I also went through a very long wait with many ignored phone calls and many broken promises to get my M3B.
I have always used the factory tubes and in about 25 years of use between the two preamps, have lost but one single tube.
I hope my money, my wife and my M3B outlive me. If my M3B dies, I shall regrettably look elsewhere.