I need help hooking up Merlin vsm mme Bam to avr

You can hook the pre-amp out to the BAM in and the BAM out to the amp in. Or you can put it in the tape loop if the AVR has one.

If you only use a single source i.e. CD player only, put the BAM between the CD player and the pre-amp. Output from your CD player to the input of the BAM, output from the BAM to the input of your pre-amp. You will need one extra pair of interconnects.

If you use multiple sources and your pre has tape in and tape out rca's on the back. Using two pairs of interconnects, take the pre's tape out put into the BAM's input, take the BAM's output and connect it to the pre's tape input.

If you use multiple sources and your pre does not have tape in and tape out rca connections, connect the pre-amps output to the BAM's input, connect the BAM's output to the amplifier's rca inputs.

thank you very much Swampwalker and Brf you have been very helpful, cd player to the bam input and output to the pre-amp, gona try that.
thanks very much guys!!

Since you have a receiver (pre-amp, tuner, amp on one chassis), the BAM output is going to go to the CD input on the receiver, which directs it to the pre-amp section of the AVR and then the amp section. Assumming CD is your only source. For more than one source, insert it into the tape loop as Brf says, or insert btwn the pre-amp and amp section of the receiver, if there is a pre-out and a main amp in.