I want to put my 2 cents in here on the Cambridge Audio 351R amp. If you don't intend to use HDMI, this is less relevant - although if you're not using HDMI, your money is better spent on another amp.
My review of the CA 351R on Amazon, copy/pasted here:
Looks and sounds great, but has a collection of annoying drawbacks that ultimately make it - for me - a poor choice.
First, there is an auto shutoff that can't be defeated, so the amp shuts down after 30 minutes and if you use a universal remote, the signals get scrambled up. Second, the display is bright and cannot be dimmed for home theater.
Third and most importantly, the HDMI implementation just stinks on this unit. There is major audio lag when performing any action from any source; this includes changing a channel on TV, rewinding or ffwding on TV/DVD/Streaming; worse, it means that during CD or even streaming playback, the unit must re-lock onto the signal BETWEEN EVERY TRACK. Since the processing speed isn't great, it clips the head off of every single new song!
Too bad, because in terms of sound quality and looks - it's great. But having every song clipped, and the annoying audio lag every time you touch the remote, is just too much here. If you plan to use HDMI, you need an amp with more powerful processing.