Hi. Complete newbie here. I just recently purchased an Audiolab 6000a, a pair of Kef 3 speakers and a SVS SB2000 sub. I’ve been running those happily for a few weeks and absolutely loving it. However, I was recently given a gift of a Marantz MM7025 power amplifier, which I’m excited to hook up. The problem I’m running into, is that the power amp is taking the pre out sockets, and so I have no idea how to connect the sub. Do I use a y splitter? Or is there some other way of connecting it that I’m missing. Thanks in advance for your help!