I have had a few pairs AQ diamond 3 a long time ago and found them to be anything but bright.... in my system they were ultimately smooth and mellow. I must say that through the years I have found AQ cables to be nothing but truthful to the signal given to them....if your equipment is not up to it the top line cables will reveal it ruthlessly. I compared the Diamonds at the time to quite a few newer AQ cables and would say they would be closer to AQ Anaconda (psc+) than anything else. The Anaconda bettered the diamonds with AQ Amazon bettering them by quite a margin again. The Newer AQ cables are once again a leap ahead....Niagra is the best buy of the new range in at the moment with cheetah being the best buy of the previous range in my opinon. Hope this helped