Guido,
The NC400 modules are available for DIYers only. It's a fairly easy assembly and costs about $1800 total for all parts, including chassis, binding posts, wire, electronics, power supply etc. for two monoblocks.
What you do is buy the NC400 amplifier module and power supply modules from Hypex, and search for some DIY assembly threads on AudioCircle.com and diyaudio.com. Or you can pay someone to assemble them for you -- there are a few builders out there I could put you in touch with.
The NC1200 is available commercially, but those amplifiers are much more expensive.
There are only a handful of OTL amp makers out there and I've owned two different OTLs from two different manufacturers, so you could probably guess who they are. I've also owned or auditioned SET 45 and 300B, and 421A, based amplifiers, some by very well known names from both the US and Japan.
The NC400 is smooth, relaxed, grainless, and neutral. It doesn't have the presence of a 45, but it has more control. It isn't quite as fast as the best OTLs (when paired with the right speakers) but its pretty close.
I'd say its every bit as good as these other very good amplifiers, but it has its own character, and that character is not a bad thing. I'm sure not everyone will think so, but here's one person who thinks they're pretty darn good.
Sometimes I hear people say so and so sounds like SET. Okay, what SET, could you be more specific? When it comes to the Hypex NC400, I'll say you won't have something that sounds like SET, but you'll have something that sounds every bit as good, whose character is very very neutral, but also is totally relaxed, effortless and fatigue free. And at 400 watts, will drive most speakers easily and with slam and authority. Oh and they run cool to the touch with minimum power draw.
Do you miss the big tone of the 6SN7, the drive of a 12AX7, or perhaps the clarity and speed of the 6H30? There are many tube preamps that will pair splendidly with the high 100Kohm input impedance of the NC400.
I've run the NC400 direct from my NAD M51. Good if you like straight up solid state, but its missing the right kind of tube magic.
So far I've paired the NC400 with an Atma-sphere MP-3 and its pretty terrific, as good as anything else I've heard. Next up is an ARC LS26.
Wilson
