Here is the manual for that setup.
click here ---> http://products.bose.com/pdf/customer_service/owners/901_guide.pdf
If you need further assistance I will be glad to help you.
Click here---> http://www.pioneerelectronics.com/pio/pe/images/portal/cit_11221/297336630VSX516OperatingInstructions.pdf
Page 11 shows the inputs for tape.
Just to clarify. ANY receiver is compatible witht eh Bose Eq- it just depends on how you hook them up.The Bose Eq's Inputs should be connected to the receiver's Tape Output (or "Playback"), the Bose Eq's Outputs should be then connected to the receiver's Tape Input (or "Record"). You would then choose CD as normal of the receiver's Inputs, then press "Tape Monitor". This will engage the Eq and allow it to process the signal properly. Another option if you still can't get this to work, is to plug your CD player into the Eq's Input, then plug the Eq's Output into your receiver's CD input.
If this answer solves your problem, please click "Accept".
Sorry for the unprofessionalisum in given the same answer as I already have.
I do not know why Bose told you that however you can hookup any receiver that has a tape in/out on it which your receiver does in deed have. The info I provided before explained to hook to the tape in/out and then attach the cd player to the tape in on the eq, and press tape on the receiver for it to work.
If you still need further assistance I will be glad to help you.
Do you need further assistance with this?