I have used some expensive power cables with the Brystons but really did not hear much of a difference from the stock cable. On other components, such as CD player, I did hear a difference with the power cables.
I really like my Audience Au24 balanced interconnects with Bryston amps (very thin cable). I have also used th Bryston interconnects before. They are much lower in price but I much preferred the Audience Au24's.
I made the mistake of thinking cables are not as important when I bought my current monitor speaker, Thiel SCS4. It is not as high-end as my previous floor-standing speakers, Reval Salon, so I thought I would get a low end speaker cable because it should not matter too much with the new speakers.
I had a pair of AudioQuest Volcanoe ($900) for the Salons but they were only 3 feet long each. I needed a longer speaker cable for the new room. So I bought the AudioQuest Granite ($130) speaker cable along with the speakers. All these cables were bought used.
Things sounded quite good with the Granite for about 2 months. Then I bought a pair of Bryston Power Paks 300 and put the Bryston 7B-SST's, I was using with the Granite, back into storage. I was now also able to make the 3 foot Volcanoe reach my new monitors. Well I was shocked at how much better the sound was with the Volcanoe. It was so much clearer, detailed, more bass.
I could hear differences in cables with my old Salons but I was also surprised that even in lower models you can easily hear a difference.
