Although I rarely mention my fabulous Jolida 502p (!), I have to say my "factory modded/upgraded" (100 bucks extra) version is a quiet and powerful GREAT sounding amp. I've taken it apart and its build quality is clean, and I've never read a direct comparison review with Prima Luna so I have no clue if anybody thinks Prima Lunas sound better based on actual listening. They're similar designs with Prima Luna using an "auto bias" circuit and Jolida using an "ez bias" that the designer thinks is a better idea, although I doubt that makes much difference other than adding some convenience. They certainly cost more though, perhaps to justify the mountains of hype and advertising. Try to find a recent Jolida 502p review or an advertisement and you'll struggle...the perception of Prima Luna being a "step up" so far seems based on hype (and cost...it MUST be better if it costs twice as much), and I bet 2 502s run mono for 120 watts per side will stand up to most any non-premium cost amp rig, at least in power output and at less than the cost of one 42 watt stereo Prima Luna. I also like the Jolida XLR inputs that Prima Luna lacks. Kt120s work fine in a 502p, and Prima Lunas will run most anything within reason, albeit with less power output than a comparable Jolida (another difference is the triode/ultralinear switching that Jolida ignores...that alone could justify the higher price for some). Kevin Deal does a great job hyping Prima Luna and they seem like a really sweet line of amps...nobody hypes Jolida except me...and Jedinite...and maybe somebody else, but certainly not Jolida unless you call 'em. Also, Jason Statham bought an amp from Jared at Jolida...that means something, doesn't it?