The Marantz amps with the HDAM module are fantastic and perform above their price range. I heard a demo rig at a local store that had a Marantz PM8004 integrated amp ($999, their lowest price amp with HDAM) powering a $12,500 pair of Sonus Faber Cremona Ms. You would *never* have guessed that the sound from the Cremonas was powered by a <$1K amp. The Marantz HDAM amps are fast, clean, linear, neutral, with great control over the speakers, yet not a hint of edginess or clinical coldness. They also have a signal-to-noise ratio around 125 dB. which makes for excellent low level and inner detail. I heard some music I was very familiar with sound bigger, lusher, and more fully fleshed out than I'd ever heard it before.