2 x 58 mm special broadbands with impulse-friendly paper membrane and powerful ferrite drive system Integrated 85 mm subwoofer with a particularly linear, high-stroke and low-loss drive system for powerful and dynamic bass reproduction Long-throw 102 mm bass radiator in the base for optimal deep bass reproduction without flow noise Klippel® optimization for all speaker drivers minimizes playback distortion at Allen volumes and ensures detailed, precise sound Thanks to its compact dimensions, it can fit anywhere as a mini stereo system and high-quality Bluetooth® speaker Bluetooth® input with high-end audio standard Qualcomm® aptX™ for music transmission in CD quality Practical control panel on the right side with a large rotary control for source selection and volume Fully digital DSP-base