These speakers are sleepers, this is one of the best values you can get, I am using an Adcom GFA 555 amplifier and I have them Bi-wire and these babies are dynamic with no compression at all. They have plenty of adjustment on the tweeter and midrange so you can match the tonal balance to the rest of your speakers if you have them in a surround sound system. I have these babys crossed over at 60 hz to my JBL Synthesis Sub and I can play them as loud as I want them with out breaking-up. These speakers are SLEEPERS and the best value for your money, easy to install in a home theater system and best of all they play your music at life levels. HIGHLY RECOMMENDED!