Technically many amps complete with this amp thou... Its because of those 3 letter words that overrides anything sadly. T.H.X - Thats all, its the t.h.x implementation that is the rave. I talk to some people, they said they can make stuff thats better than using t.h.x design. The future will tell if t.h.x design was just a faze or not... Head-amp Gilmore - Excellent Rupert Neve Designs RNHP 1 - This is actually better Topping - Anything from them is pretty good JDS LAB Atom - $100 is a killer. Can name you 25 amps above $1000 that is better than the thx aaa 789. Beyond better. So yea. Many amps. Again its those 3 letters. And the price of $350. i also notice its because of the scarcity of this amp thats driving interest in this. I must note that this is not saying this amp is not great. It is amazing for its price and performances.