I currently have a Pioneer elite sclx 904 av receiver. Ok. I am currently using 2 identical Anthem mca225 power amps being fed from the front preamp outputs on the Pioneer that are powering a pair of B&W bookshelf speakers. One amp on each speaker. I'm using an rca Y splitter on the front left preout and another rca Y splitter from the front right preout, so I guess you could say by using these Y splitters the signal from the preouts are " split". Also have a powered subwoofer hooked to the Pioneer receiver. I recently acquired an NAD preamp that does not have a sub out ( like the Pioneer does). NAD only has one left and one right preout. If I hook the Anthem amps up the same way I did to the Pioneer by using the Y splitters then I cant hook my sub to the NAD because there are no more preouts and no dedicated sub out. Correct?? I want to use the NAD but don't want to lose my sub. Thank you.