Owned them for for 3 years. Overall for the money a good amp.
Pros: run very cool and only draw about 35 watts at idle, very smooth sounding amp, good detail and transparent window, able to drive low impedance speakers.
Cons: lack weight, cooler clinical sound, lack soundstage depth, hard to keep biased ( mine drifted a lot ), felt Product support after purchase was average at best, very long brake in period and must be left on constantly.
Are they worth the money; yes they’re. Remember your paying a direct price from the manufacturer and he sometimes will cut that price a little further. The bigger question how do they compete against their peers and higher cost amps?
Do they put their peers to shame; some, but not all. Do they out perform amps costing more; maybe some, but once again not all. If he was to rely on dealer support to sell his amps you would be tacking on another 45-50% to the price.
At $6000.direct good amp for the money. At $10000. retail will hold its own against some, and mere average against the rest.
My final conclusion sums it up like this. They’re a good value for the money and you are getting your money’s worth. Are you paying less for this amp direct and getting them at a bargain of what they should sell for: no your not! They’re not going to blow away the competition at $10000-15000. Do they compete in that range; at an average level maybe?