Thank you for all the feedback so far. They are both helpful and encouraging. This project has been in a 3-year making process. Since the prototype, we have gone through many circuit enhancements, finalized parts selection (all top grade audio parts), and solved the noise problems. Proudly to say, the noise level is virtually not audible among the 3 types of power tubes.
This is a collector's item. There is no limit to sound. Tube rolling options are countless. You will be sure to find the right combination of tubes for your taste. The 234 MONO is our statement product. It is ABSOLUTELY the best performance amp we have ever built.
At the moment, the website is still showing the prototype unit which can cause confusion. We ask you for your patience while the the information unfold.
Finally, here is the photo book for your enjoyment.
http://www.adoramapix.com/app/showbook/jack_60/book/234-MONO/
Best,
Jack.