The fact that the engine power is utter nonsense, is clear. Did tested the thing and the same two-ordered! My Samsung home theater system rushes clearly audible. In this part, I thought at first, that's not the point, because for me no noise was audible (even with ear to the speaker), not even turned up at full gain. Respect! Whether the thing still enough audiophile ears, I do not know. For me to the next room sound in installation situations in the house with a small eco-12 / 2A mains plug and upstream Apple Airport Express sufficient. At 5V output can be equal even load the mobile phone etc. or provide other electronics, awesome! Feared to bring about the extra-selling 12V power supply a mains hum in the system - zero, nothing. This part is really worth the money !!!
