Hi Mike, I have a pair of the Concerto 2's that I'm bi-amping with Decware amps, about 5 watts per channel. For speaker cable I'm using Stage III Concepts solid silver. The Sonist's replaced a pair of Reference 3A MM De Capo's that I had for about 10 yrs. I bought the Concerto 2's about a year ago and couldn't be happier! What are you using?