How to Set Up Your BLUTUBE: Video of BluTube: Includes: Tube Amplifier / Receiver 5 Foot Tiffany RCA to 3.5MM cable 5.5 Foot Power cable Owners manual / Warranty card Features: Rockville BluTube Audiophile grade tube amplifier with bluetooth 25 watts x 2 RMS @ 8 ohm 35 watts x 2 RMS @ 4 ohm Tube amps do not hard-clip even at high volumes and are extremely efficient. Due to this the amp sounds more like double the rated power! Built in Bluetooth with 33 foot range Built-in Preamplifier (2) sets of Tiffany RCA inputs to connect to any audio device like a TV, Laptop, or MP3 player, etc Headphone output VU meter Adjustable bass and treble (2 band equalizer) USB input for music files from USB thumb drive USB can charge your phone or other USB device Rear Speaker Terminals: Banana plug / binding post outputs for 2 speakers Frequency Response (±3dB): 25Hz-20kHz Input Impedance: 47kO Input Sensitivity: 300mV Output Impendence: 4-8ohm Total Harmonic Distortion(THD): =0.02% Signal-to-Noise Ratio(S/N): =86dB Bluetooth: 2.1+EDR USB: Supports WAV/MP3/WMA/APE/FLAC 110V power supply Unit weight: 6.6 lbs Unit dimension: 10.6"x10.2"x5.1"