Sennheiser (http://www.sennheisersoundtour.com) has expanded its line
of full-sized, portable HD headphones. The HD 428, HD 438 and HD 448
are optimized for portable players but also deliver strong audio
performance on home hi-fi systems, making them an ideal choice for
users who want to crank their playlists on the move and at home,
according to Eric Palonen, product manager for consumer electronics
and telecommunications products at Sennheiser's U.S. headquarters.

The top-of-the-range HD 448 model (US$129.95) offers a lifelike sound
experience with precise detail, he adds. The HD 438 ($119.95) also
offers a natural sound signature, while the HD 428 ($99.95) is more
focused on the lower frequencies and delivers powerful bass response,
according to Palonen. Each model features a closed-back,
around-the-ear design that provides impressive sound isolation. For
perfect sound on a home stereo system, each headphone comes with a
gold-plated quarter-inch stereo adapter.

The HD 448 features a retro design and metallic trim elements with an
embossed Sennheiser logo. Five high-gloss metallic "wheel spokes"
adorn the ear cups of the HD 438, which are reminiscent of the alloy
wheels on luxury sports cars. On the HD 428, a dark rubber coating
provides a rugged, sporty design.

The HD 428, HD 438 and HD 448 are available online (a
href="http://www.jr.com"TARGET="_blank")from J&R(/a) and will hit
Best Buy stores in late October.