Well, I can tell you they are one of the best amplifiers and pre-amps in the audio world if not probably the best available at down to earth prices. In my setup they have outclassed many more expensive Tube gear.
Atma-Sphere Customer service is one of the best in the industry and warranty upgrades is too. Iv never had any issues owning Atma Gear or having experiences with Failure.
Ralph is well respected around these forums and always answers emails with any questions you may have.
It may be advisable to research about Atma-Sphere posts first before you make such comments about the company. They have been in business longer than I have been alive on this planet. I spent months researching about Atma-Sphere many years ago before I decided to place orders for a full setup. Comparing them to VAC, BAT, CAT, PASS and many other audio companies I never have had much satisfaction except with Atma.
Proper matching is required for the Power Amplifiers to Speakers, however even the Pre-Amps can outclass many more expensive audio gear even 4 times its price. Something to ponder on. If your in the USA, I would urge you to fly over to Atma and hear for your self.