Jorden, folks! Hope all is well!
I can't really compare to another tube, as the Valhalla 2 has been my first tube experience (other than listening to guitar amps every now and then), so the only thing I can say is that it does sound pretty good to me... I can definitely listen as "background" music while reading/cooking/etc and really sit down and relax and ENJOY the music!
It fits well my needs... both as a headphone amp (GS1000i and Beyerdynamics DT770 Pro 250 Ohm) and as a pre amp...
Cheers!