Looking to move to a Tube Integrated setup

With speakers at efficiency at 98dB I  would go low watt.

I run a 4 watt Decware with a 92db Ref 3A de Capos and the sound is amazing

my second system has a 2/6 watt Grommes PHI-26 with 97db Klipsch Quartets and damn does that sing. 

With your speakers you have lots of options for low watt tubes

After many years (decades, really) of being a dedicated solid state guy, a few years ago, I took the plunge and picked up a Prima Luna Evo 300 Integrated Floyd. After about a year, I got curious, and rolled the very respectable stock 12AU7 tubes to NOS 1960s (for the signal pair) and 1970s (for the 4 gains) RCAs. I've been really happy with the tube front end / SS back end, and the sound with the NOS tubes is just sublime.

I know there are other, more rarified and more modest choices out there, but for me, the Prima Luna really hits the sweet spot, and represents a solid value for the money. Happy hunting!

McIntosh MA352

The Moab is not an easy load (per the Stereophile review) though is was measured as 93dB @ 2.83V.

https://www.stereophile.com/content/tekton-moab-be-loudspeaker

DeKay

@ghdprentice   Regarding AR in general, and the I50 specfically it seems like a downside is that you supposedly can't bias these amps yourself and are required to have a tech do the work. That may be fine if you have one in your locale but not optimal if you have to ship the amp every 2000 hours of tube replacement (I50). What has been your experience with this?