All About The BluTube Series: How To Set Up Your BluTubes: How To Set Up Your BLUTUBE to a Smart TV: How To Set Up a Subwoofer to Your BluTube: How To Set Up a Gaming Console to Your Blutube: How To Set Up Speakers to Your BluTube: Includes: Tube Amplifier / Receiver 5 Foot Tiffany RCA to 3.5MM cable 5.5 Foot Power Cable Owners Manual / Warranty Card Features: Rockville BluTubeLED Audiophile grade tube amplifier with Bluetooth Black color with blue illuminated tubes and blue illuminated knobs 25 watts x 2 RMS @ 8 ohm 35 watts x 2 RMS @ 4 ohm (1) set of Tiffany RCA inputs to connect to any audio device like a TV, Laptop, or MP3 player, etc Optical input HDMI Input Coaxial input Sub output 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 Headphone output VU meter Adjustable bass and treble (2 band equalizer) USB input for music files from USB thumb drive Rear Speaker Terminals: Banana plug / binding post outputs for 2 speakers Frequency Response (±3dB): 22Hz-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 Unit weight: 6.6 lbs Unit dimension: 10.6"x10.2"x5.1" Fit Guide: table { width: 600px; border-collapse: collapse; border: 1px solid black; } th, td { border: 1px solid black; padding: 5px; text-align: left; } th { background-color: #f2f2f2; } Brand Model Yamaha NS-6490 Speakers ELAC Debut 2.0 B6.2 Speakers Klipsch RP-600M Speakers Q Acoustics 3020i Speakers