Is portable the only way? Your post doesn't make it clear. Desktop amps, even in that price range, exist, and are most likely to be a step-up from portable amps. I don't know about synergy, but after hearing from the very inexpensive Qinpu Q1 I just received, and comparing it to my pa2v2, I have a hard time recommending the pa2v2 for anyone for home use.
If you really want it portable, pa2v2 ain't bad, I guess.
I don't know if it's because I just received it, but the Q1 makes me feel like it is an exceptional value in the amp market. I'm still a complete newbie, but I really feel like it might be the ksc75 of amps.
Still, I'm still experimenting with it, and will use it a couple of weeks before I really can make myself a good, clear, opinion on it.
So again, does it really have to be portable?