A pair of passive desktop speakers 3D-printed from cellulose composite material. The material has a natural wood-like feel and organic surface texture. Good damping properties of the material together with the complex internal structure made possible by additive manufacturing mean a unique design that fits in many environments. The sound is also very distinctive. The full-range emitters by Mark Audio provide a remarkable presence that many larger speakers can not achieve. RD Physics is all about science and engineering. We therefore ship these speakers with a calibration microphone, so that you can get the most out of them in your specific listening conditions. The microphone will be fully refunded (100 EUR) within 30 days if you have completed the calibration and do not want to keep the microphone.