I went from Super MM2(gen 4) throughout to Gen 5 Reference. After upgrading to Gen 5, I bought a new center channel and upgraded the speaker cables to Reference but forgot to order the IC. The sound out of the mains compared to the center channel just wasn't right. My wife bought me the Gen 5 IC last Fathers day and movies sound dynamic, crisp, and even throughout. For stereo, the change from MM2 to Gen 5 was huge. A lower noise floor and better imaging were immediately noticeable. I wouldn't have noticed before the switch but the change sounded like moving from the back of the concert hall to the sweet spot. Everything was less veiled. Upgrading PCs on amps and pre made big improvements in dynamics and punch. Very nice upgrades IME.
Dave
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