Denon entered the headphone game just last year, but for a freshman competitor, the company had a lot to offer. Most of the models we auditioned--both full-size home headphones and travel-friendly in-ear models--ranged from good to excellent. Now the company is expanding its offerings with a noise-canceling model. The AH-NC732 On-Ear Noise Cancelling Headphones offer a lightweight (160 grams), acoustic optimizer (said to offer deep bass), and compact hard case. A single AAA battery is needed for the active noise cancellation, which counteracts ambient noise with an inverse soundwave. In other words, the new Denons look to be targeted directly at the similarly styled--and very popular--Bose QuietComfort 3s. Look for the Denon AH-NC732 On-Ear Noise Cancelling Headphones to hit in August for $300--a cool $50 less than the Bose.