Right now I have a mc352 it was mated w/ a c42 for about 2 1/2 years. I felt the preformance of the c42 was about 7 on a scale of 1 to 10, so I upgraded to a BAT vk51SE, what a huge differance. Remember MAC is known for their amplcation not so much for their preamplication. As for the mc352 I am very pleased w/ it`s preformance mated w/ the vk 51SE. I to am going the BAT direction not that I am dissatisfied w/ the mc352 I just want to give a vk75SE a try, by the way I do plan to keep the mc352 for the garage system. David