Hi all. I'm upgrading my amp and my speakers and I want to be sure that my new equipment sounds better. Currently I have a Kenwood A-54 and two Eltax Silverstone 160. I've purchased a NAD C316BEE and a pair of Wharfedale Diamond 10.2. I couldn't find any relevant info on my current equipment so, although I guess that my new system is better, I don't really know. Testing the speakers is quite easy. The Kenwood has A-B speakers output so I'm going to (single) wire the new Diamonds to the amplifier, play a known CD and switch between A and B output several times so I can compare the sound. I did this when I switched from my previous Sony midi speakers to the Eltax and the sound difference was quite noticeable. Testing the amplifier, though, seems quite more difficult. I have two CD players which sound pretty the same with my Kenwood, a NAD 514 and a Yamaha CDX 396. So, I could attach one of them to the C316BEE. What I don't want to do is play a CD with one set, then disconnect the speakers from one amp and reconnect them to the other and play the CD in the other set. I would like to perform an instant switch to really be able to compare the sound. Having two pairs of identical speakers would do the job but how can I do this with one set of speakers? A (possible fool) idea is to wire the speakers to both amplifiers. The Diamonds are biwireable so I could connect one amp to the L connectors and the other to the H connectors and leave the interconnectors so they are actually single wired. But, can this damage the speakers? I don't know a lot about hi-fi so I don't know if this double connection is harmeless or even if the speakers would work attached like this. If this is not an option, anyone knows another way to do it? Of course, if the new speakers sound exactly like the old ones I could do the test easily, but then I would be really disappointed! I hope the new speakers to improve the sound (and the new amp also). Sorry for the long post.