I think results are very system dependent. That said, in my system I found the AQ cables (tried the tornado and hurricane) on my Luxman M900 amp to be bass heavy, a “from the ground up” cable that was a little muddy sounding overall. I did not like them in the system. The Shunyata cables (tried delta and alpha) were much cleaner and balanced. While I thought the delta was a really good value, and perhaps ideal for a preamp (tried there too) the alpha was a big step up. I also tried several other companies’ wares via the cable company lending library. The Shunyata alpha NR was by far the best match for the amp. All cables were plugged directly into the wall.