High-end Rotel musical amplifier. Manufacturer: Rotel Model: RA-550 Working very good, it's heavy. A 2 x 40 watt 8 Ohm or 2x 60 Watt at 4 Ohms integrated hi-fi amplifier. Rotary controls for Bass, Treble, Balance, Phono Selection (MM or MC) and Volume. Press buttons for Power, Speaker (A/B), Subsonic Filter, Mode (Stereo/Mono), VU LED Power Indicators Sensitivity Selector, Loudness, Muting, Tape1, Tape2, Aux, Tuner and Phono. 2 x 6 LED Left and Right Power Indicators. Jack for Headphones. Continuous Power Output : 40 watts per channel, min. RMS both channels driven at 8 ohms from 20Hz to 20kHz with no more than 0.08% Total Harmonic Distortion Damping Factor : 50 (20Hz to 20kHz, 8 ohms) Input Sensitivity/Impedance : Phono (MM) ..... 2.5mV/47k ohms Phono (MC) ..... 0.2mV/30 ohms Tuner/Aux/Tape 150mV/33k ohms Net weight (2.2 lb = 1 kg) 7.4 kg / 16 lb 4.8 oz (16.3 lb) Pictures are part of the description. Carefully insured shipped