Z-Reviews is a lot of BS, he gets things wrong so often it's not even funny. NOT all the amps sound the same, DEFINITELY.
sAp-8 is quite good, linear, neutral, well built, good looking/discrete, etc.
The only downsides are that it gets moderately hot and the RCA inputs are reversed, pretty much like on all smsl products, and you might want a more powerful power supply, I think the amp can use it.