<http://schema.org/description>
"Rolls HA204p Battery Operated Headphone Amp [HA204P] - Headphone Amplifiers: The HA204p is a full frequency response, four channel headphone monitoring device designed for the recording studio, or other professional applications. Each output boasts a whopping 20 dB of clean channel gain. Features: Stereo 1/8&amp;rdquo; and Dual RCA Inputs Rotary Volume controls AC adapter included 15-35k Hz frequency response Lots of output level.... it&amp;rsquo;s loud! 9V battery"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.avshop.ca/recording/studio-monitoring/headphone-amplifiers/rolls-ha204p-battery-operated-headphone-amp>