Starkrimson and Freya+ F ??

Hello,

I have an Orchard Audio's Starkrimson Stereo Ultra Power Amplifier (Class D with beefed up power supply).  Haven't used it for a while but I'm getting it serviced and would like to pair it with decent tube pre-amp. I am considering the Schitt Freya+ F because it can be run in Tube or Passive mode.  Tubes for when I'm sitting down and listening to music seriously, Or in Passive mode, without the tubes on, for when the music is just playing in the background (Like when my wife is just streaming Christmas music in the background for most of the day).  Also, my thought is matching a Tube preamp with the class D amplifier could be a good pairing, But I am concerned about the heat and wear and tear on tubes if the amp is on all day.  From what I can see there are some favorable reviews of the Freya+,  I don't know of any other preamp that has ability to run in ether tube or passive modes.  

I'd appreciate any thoughts you have on this,  thanks