i have demoed multiple sets of AQ interconnects (king cobra, cheetah, & cannot remember the 3rd - it lacked the stupid battery packs) & all of them went back. they all sounded fine, & i thought i noticed some small difference between my monster m850i & the king cobra, but it was not an improvement & in no way justified the price increase. just demoed the cheetah over the weekend & could not tell any difference between it & the m850i. there is nothing wrong with AQ quality, & i do have to admit that compared to the ridiculous monster connections i can appreciate not having to break my arm to remove or install an interconnect, but i'm not willing to pay hundreds more for that.
the only AQ cable that i ever heard a difference with was their coax 5 series. i needed another coax & happened across a demo one for a very reasonable price & thought what the hell i'll try it. didn't notice any difference in listening to music, but ohhhhhhh what a difference with home theater. i was watching star wars II - opening scene where the silver space ship flies over & the bass was substantially more than with my old monster coax. nothing changed in the system, & had just watched the same part of the movie the day before. watching several other movies also showed an increased bass output. i thought i was nuts so reinstalled the monster cable, & swapped several times back & forth, with the same results. i can't explain it, but i love it. going to buy another AQ coax 5 series for my other DVD player.