Hi from a Newbie, I've been hitting the online second hand market, buying a (hopefully) decent system. Three of these components now have to work together, this question is about the best way to do that, in other peoples opinion. My amp is a NAD C372, which has 2 sets of speaker terminals (A & B) and variable pre-amp and main amp possibilities. Currently the plug in connectors link Pre-Amp 1 to the main, Pre-Amp 2 (which has a 'volume' control) is unused. I've bi wired a pair of KEF Q90's to the speaker terminals. All good. I've now purchased a KEF PSW 2010 subwoofer, which will have to be connected in when it arrives. The amp has no sub out, which leaves me with two choices; 1. Connect the Pre-amp 2 to the input of the sub, then using the pre-amp 'volume' control and the controls on the back of the sub, try and get it to sound good. 2. Connect the Pre-amp 1 to the sub and then connect the 'high pass' output from the sub back to the main amp on the C372. Option 2 sounds like the easiest, let the sub manage the crossover, however that then leave the 'quality of sound' in the hand of the subs onboard amp. Option 1 sounds like a lot of fiddling around. Opinions? Ideas? Whilst I do get how stuff works, this is new territory for me, all help gratefully received. Below is a graphic of the rear connections of both.