In operation as a normal home theater system at low volume of really loud and noisy fan inside may be disconnected safely, the rest is also so only lukewarm. Who needs a little more power and hobbyists is: An about 200 ohms (at 25 degrees) 1W NTC in series with the 12V 0.1A fan ensures imperceptible noises during normal operation, the fan will run only with about 4 volts at 25 degrees, and for adequate cooling under high load - the NTC must thermally connected, but electrically isolated, to be connected to the main heat sink.
When the amplifier is connected via AC3 can be, apart from the volume of the channels, amazingly, only regulate the heights and not the bass, a bit annoying when the same output is used the same from Home PC for stereo output. If the needed help splitter cable, which the front R / L split on front R / L, and the DVD R / L input, the input impedance is so that there is hardly high enough to volume loss. It is better, of course, if the PC itself generates equal the surround sound from the stereo signal
The sound quality is subjectively relatively well over the frequency range. The adjustable surround sound options seem relatively simple one, it should rather be controlled from the PC.
The manual is not very meaningful, some options that appear on the display (narrow, wide, phantom) are permanently on, but apparently no matching settings in the menu yet, so far I did not find out what really makes the HiFi On / Off function.
Conclusion: to good use as a model with lowest priced in the market, especially if you have to use some built-in filter
