I have been an owner of two Audiomat tube integrated amplifiers for over twenty years. I first bought the Audiomat Arpege and LOVED it. A few years later I had an opportunity to buy an Audiomat Prelude Reference MKII that had been a demo. I’m still using the Audiomat Arpege in the TV system. I think it’s had one repair in 20 years and that was the volume knob. I recently moved on from the Prelude for no really good reason. It had only one repair in the same lengthy period and it was for the same issue, the volume knob, an inexpensive repair. I had just heard Luxman tube separates each selling for well over double the price of the Audiomat Prelude. If you look for reviews on Audiomat products you will find them uniformly outstanding. Here is one on the Aria, pure Class A.
https://hifiplus.com/articles/audiomat-aria-integrated-amplifier/