THA'S OK !
Transport to the Czech Republic was express - 8 days. The amplifier works perfectly, installation in the BMW K1600 GT was very quick and easy (everything is already prepared for the original radio). The volume is more than good and the controls are easy. After switching on, the speakers will be greeted and ready, this is long and very loud when switching on for the first time - a minute after switching off the ignition, my main power supply always disconnects. I would cancel this feature, otherwise I rate 1 * Thanks to the seller for the quick answers to my questions.