AH-NC732 is reviewed very well in 'Secrets of Home Theater and High Fidelity.'
"There are many on the market, the difference is how they perform and I'm hooked on the Denon's sound quality - it delivers in spades elegant and rich rewards for anyone dropping $300 MSRP on portable headphones. The Denon's come well equipped, and work even when the battery fails, most do not." (Piero Gabucci)
Read more at:)