Thanks to unique sound technology in a compact and sleek housing, the HC397 delivers clear and dynamic sound. The modern digital amplifier technology (LincsD-Amp) ensures faithful sound reproduction without disturbing distortions. Four radiators - front, back, left, and right - provide strong bass. When compressing digital audio files into MP3 format or transmitting via Bluetooth, there is often a loss of signal parts in the high-frequency range. The re-master function compensates for this loss of the audio signal, resulting in high-quality sound.