Re: BOSE 901 hokup
You do need the equalizer in for those to sound even halfway decent. My first reaction would be to get some speakers to use other that those, but I also know how hooked on Bose some people are.
I have a friend who will not give his 901s up and had his receiver modified to allow the use of them with the eq. Other than that if you don't have a tape monitor on the receiver, I don't know.