The most powerful amplifier in the AX range offers a massive 100 watts per channel, a dedicated subwoofer speaker output for improving bass and two sets of speaker outputs. In addition, the built-in Bluetooth receiver allows you stream your favourite music from your smartphone, tablet or PC.200Hz 2nd order L+R Level follows volume setting. PCM 16-24-bit S/P DIF Co-axial 32-192kHz Toslink Optical 32-192kHz. 110 x 430 x 340mm 4.3 x 16.9 x 13.4? 5.0 A2DP/AVRCP supporting SBC. We'd expect this to mean that you've kept all original packaging and labels, and that it's undamaged and unused. At Cambridge Audio, we strive to provide the best possible customer service. S why our products are designed to be easy to set up and use.