I hear the question a lot regarding the need to the Bose EQ with the 901 speakers. My situation is a little different. I have a ADC Sound Shaper 30 on a Marantz Receiver hooked up through the Main/Pre. Since the ADC also has a true Tape Monitor option, I have connected the Bose EQ as a Tape Mon in the ADC. The sound is great but a have a light hiss in the 901's when no music is playing. Should I be running this configuration?