I amp not familiar with that amp. Do you intend to use the amp with 901 speakers? I only ask that because I have some knowledge about the speakers. If they have much age on them then carefully check if the foam surrounds are shot. Not a rare condition with those speakers if they have been in existence for very long. If the surrounds are shot then forget it.
As I have expressed my opinions in the past...........Bose....less that mediocre equipment at inflated prices. Less money is spent for something much better.