Yamaha DSP-AX620 Natural Sound AV Amplifier 7.1 Channel Amp Phono input Working. Used working condition No remote control Display not the brightest. Tested with a CD player and a record player, using phono input and gnd connector Record player comes through a little quieter than the other inputs. Have listened to amp with effect on and effect off. Listening to CD player, with effect off sound is in Center speaker and both A left and right and B left and right. With effect on sound is also in the rear L and R speakers. Phono input and record player only plays through A and B speakers and the centre speaker. Bass and Treble knobs on the front. For balance you have to go into the menus and adjust valves left or right . Bass extension doesn’t seem to effect sound at all Effect changes sound mix from Jazz Club to Concert Hall and others. Headphone tested and working well. Amp was missing a foot when I got it but have found a good replacement that with a washer added comes to the same height as the others. Donor foot is at the back so should go unnoticed once installed. Colour is black Unit is fitted with a hardwired UK mains power lead Unit measures 43.5cm across the front x 15.5cm high x 35.5cm deep approx (more if you include knobs on the front and connectors on the rear) Please see my feedback and other listings