The TEAC AP-505 is a stereo power amplifier that outputs 115 watts per channel (at a load of 4 ohms), but it occupies an area only like a sheet of A4 paper. For amplification, Ncore modules specially tuned by TEAC engineers from the Dutch company Hypex are used, characterized by transparent sound, low distortion and low heat dissipation, as well as excellent signal-to-noise ratio.