The tube amplifier has seen a resurgence in recent years due to the warm, pleasing sound that only a tube amplifier can offer. The Monoprice Pure Tube Amplifier utilizes four EL84 tubes for the power output stage and three 6N3 tubes for the preamplifier stage to deliver that rich, full-bodied tube sound. This is no hybrid, with a solid state power amplifier stage here! This is a full-blown, all tube amplifier. The black panels, lighted VU meter, and the warm glow of the exposed tubes present a retro look, which enhances any home or office environment with that hint of old school styling. Featuring Bluetooth , line-level, and phono-level inputs for maximum flexibility. This all-tube power amplifier has all the features to meet the needs of today's music enthusiasts! {C}{C} Warm Rich | Tube Preamp Input Stage | Tube Power Output Stage {C} {C} Sound Quality Retro Styling Versatile {C} Sound Quality This is no hybrid amplifier with a solid state power amplifier hiding behind the tube preamp stage! It uses four EL84 tubes for power and three 6N3 tubes for the preamplifier stage, giving it a level of warmth and sound quality that can only be obtained by a pure tube amplifier. After all, life is too short for audio products that don't sound great! Retro Styling The matte brushed aluminum face, lighted VU meter, and the warm glow of the exposed tubes combine to give this amp a sexy appearance that is at once both classic and futuristic. It is the perfect addition to any office, bedroom, or other small to medium sized rooms. Versatile Enjoy your music the way you want! Use the stereo RCA jacks to connect directly to a CD player, connect your smartphone wirelessly via Bluetooth , or go completely old school and hook up a turntable to the phono inputs. Add a subwoofer by connecting to the RCA preamp outputs for even more room shaking sound. The Qualcomm aptX™ audio codec ensures that your wireless streaming sounds as clean and clear as your wiredconnections. Bluetooth audio for grownups. Listen to music like you care about it. Because of its lossy nature, digital music can often lose some of the depth and warmth that gives it life. Wireless streaming adds an additional layer of digital compression, which can further degrade the audio quality. The addition of tube preamplifier and power amplifier stages adds back some of the warmth and richness, breathing new life into your digital music, while the Qualcomm aptX™ audio codec ensures clean and clear Bluetooth streaming. 10 watts/channel 1% total harmonic distortion Qualcomm aptX™ audio codec for clean and clear wireless streaming 20Hz 20kHz frequency response Tube preamplifier stage with Tube power output stage Bluetooth v4.0 wireless streaming One stereo analog RCA input One stereo phono RCA input 5-way binding post speaker connections Buy with Confidence 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 y...