Last year at CES, I was very impressed with ZAGG’s display of the Invisible Shield. The Invisible Shield is a transparent plastic cover for mobile devices that covers it like a second skin, making it scratch-resistant. At CES 2009, ZAGG officially announced the expansion of its product line with three new audio products: the ZAGG Audio USB Speakers, the ZAGGphones, and Zbuds.

The ZAGG Audio USB Speakers are designed to plug into the USB port of both Mac and PC products, so the user can enjoy quality sound from their portable computer. The USB port is the complete power source of the speakers, which make the ZAGG USB Speakers good for travelers, college students, and others with limited space.

The ZAGGphones are headphones designed to “deliver the complete music experience, with true, clear sound for a completely immersive feel”. This sound is better than most headphones can deliver, at half the price.

For users who don’t want sound that completely closes off the world, they might opt for the Zbuds. The Zbuds have passive noise cancellation and can act as a hands-free handset. They are available in black and red, and have a variety of interchangeable foam, silicone, and triple flange tips to comfort the ears of the listener.

All three of these products can be purchased at the ZAGG website. The ZAGG USB Speakers are available for about $69.99, and the ZAGGphones and the Zbuds for about $79.99.