Since I had made the mistake of having bought my first surround sound system, a compact device whose Bluray player has 5 years now given up the ghost, and of course were no external connections, I had to necessarily buy anything new. When amplifier I decided at Amazon for this product and I can say that I am very satisfied. At last the opportunity to join a lot of external devices, a headphone jack is also available and the operation is simple and understandable. The individual boxes are volume excessively regulated, so that you can set yourself how much should be the Surround Sound. Furthermore, bass and bass / treble can be adjusted at the machine itself. In principle, everything here reminds me of the good old stereo amplifier and since I have some fun, me to deal only days with the use of a device, I have been served here well. The sound, which in any case also highly dependent on the pit is, well, at least for a relatively small living room of perhaps 12 square meters (like the sound in large rooms is to judge others). Now the amplifier must keep a long time, possibly for more than 5 years, which in today's disposable time is already a little eternity.