[PracticalDevices]

Practical Devices Corporation has recently released the XM4 Portable Headphone Amplifier.  The XM4 is the follow-on to the successful XM3, and now includes a bass boost, plus a few other tweaks.  Pricing has been set at $135 USD, and is available immediately.

Highlights:

* Bass Boost, with bypass     * +100dB SNR     * .002% THD     * Variable Crossfeed, with bypass            * Switchable Gain Boost

* Auto Power-Off * Internal Battery Charger * Solid aluminum case * Looks, feels, and sounds spectacular * and lots lots more.

More information and specs are available at: http://www.practicaldevices.com
Pictures (including the amp underneath a car tire) are at: http://www.practicaldevices.com/xm4/xm4_pictures.htm