Monoprice 113807 Stereo Tube Amp System with Bluetooth & Speakers Life is too short for speakers that don't sound great! Our engineers and audio experts have spent countless hours listening to and comparing various speakers until we were satisfied we had found models that fit our demanding standards. Featuring a polished piano black case and a brushed aluminium face, the exposed tubes and lighted VU meter combine to give this amp a sexy appearance that is at once both classic and futuristic. Enjoy your music the way you want! Use the stereo RCA jacks to connect directly to a CD player or use the Bluetooth v4.0 to connect wirelessly with your phone. The addition of the tube preamplifier stage adds back some of the warmth and richness, breathing new life into your digital music, while the aptX audio codec ensures clean and clear Bluetooth streaming. Monoprice not only stands behind every product we sell with a 1 year replacement warranty, we offer a 30-day money back guarantee as well! If the product you purchase does not satisfy your needs, send it back for a full refund.