This is the 5i (italic) 2nd version Integrated amplifier. Rated at 50wpc into 8 ohms, four line-level inputs (CD, Tuner, Tape, A/V), all four of which have RCA sockets and two of which (CD and Tuner) also offer the Naim 5-pin DIN connectors. Amp includes a remote, tape loop, and is fully integrable into a 5-channel surround system. On the front panel a 3.5mm stereo jack input socket is suitable for an iPod or alternative portable music player. A great sounding amp that sounds bigger than the 50 watts listed. I'm selling most of my 2nd system (see my ads), hardly used. I will include two 5-pin DIN connector cables made for Naim components (see photos).