The positive reviews can I join. From my perspective as an ambitious handyman, the device can convince continuous operation after a few days. An electrical engineer or engineer can safely due to its better knowledge write a more detailed assessment. Nevertheless, a trial basis with operating the car radio has impressed me very positively. The setting options - super, compared with an age-old laboratory power supply unit from the GDR era. I miss more detailed information on the device, also on the efficiency. The manual is only composed of a document from a DIN A5 sheet. I had not looked at the weight - it is remarkable. Continuous short circuit protection is not - Attention! If it still provides tidy even after the warranty period of his service department would be absolutely worth it.