Rolling tubes is, for me, essential.
The supplied tubes sound ok, but are not to my taste. I prefer the actual tube 'sound' to the solid state sound. Well, not true. I love the control and extension of solid state, when coupled with the 'sweetness' of the tube midrange. For many years, I would use a good solid state amplifier with a tube preamp, which to me was the best of both worlds.
Theres nothing, (to me) like the warmth and low level res of tubes to bring out, what for me is the most musical sound.
I chose 6dj8 pre tubes for my LSA Statement. They are Amperex (made in Holland circa 1964 August, and are very 'rich' sounding. The Telefunken are good, but more sterile sounding.I believe they were costly, but I can't remember what I paid, something like $250 for the pair. I got them from Brent Jesse as I recall.
You can completely change the sound of the LSA Amp with really good tubes.
Thanks for asking, and I hope you make the switch, you won't regret it.
Best,
Larry