Rockville Tube Amplifier Amp Bluetooth Receiver For Yamaha NS-6490 Speakers

Includes: Tube Amplifier / Receiver. 5 Foot RCA to 3.5MM cable. 5.5 Foot Power cable. Owners manual / Warranty card. Rockville Tube Amplifier Amp Bluetooth Receiver For Yamaha NS-6490 Speakers. 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 RCA inputs to connect to any audio device like a TV, Laptop, or MP3 player, etc. Optical 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"