It's also a high quality amp. There's a difference in what you would get from this as compared to a cheap amp of the same power rating. The power supply, output stages, etc. are generally overbuilt for what it's rated whereas on something cheaper those same parts of the amp are sized and built to just cover the rating, if that. That's one reason there's such a big difference in cost between quality amps and cheap ones (likewise for other equipment as well). In order for them to be built cheaper some corner(s) has to be cut to cut the cost of production, that's just the way it is. Now, a watt of power is a watt of power and when you're comparing a quality amp to a cheaper amp at lower volume levels a person shouldn't be able to hear any difference unless there's a problem in the amp that colors the signal due to a bad design or low quality parts, but for the benefit of the doubt we'll say they're the same. However, when you increase the volume and start to run the amps hard the difference will start to show itself. The cheaper amp, with it's smaller power supply with less overhead capacity will run out of steam sooner, it won't be able to supply the voltage the output stage is looking for and it will clip the signal causing distortion. The quality amp, with it's larger power supply with it's overhead capacity will be able to handle those dynamics, or peaks in the music better and therefore have less clipping and distortion. Now, that's a very BASIC explanation of the difference between a quality amp and a cheap one and basically the difference between this and a Boss amp, for example. There is WAY WAY WAY WAY more to do with it than that, I'm only trying to simplify it for the sake of not turning this into a major debate. It is true, an amplifier will (should) simply raise the amplitude of the input signal, no colorations, distortions, or otherwise changes in the signal except for amplitude, and in most cases amps do exactly that. The only real difference is when you start calling for MAXIMUM output from the equipment. The higher quality designs and built units will typically handle it better, running cooler, have less distortion and just a cleaner sound that in turn will make it seem as though they get louder, or are more powerful. People will argue with all this, I'm sure. I just can't think of any better way to explain it. People get awfully hung up on numbers though, I know I used to. They don't realize that because music is so dynamic we rarely ever use an amp to it's full potential.