As much as Id like everyone to sample the tube sound atleast once, including
@Nitin K. Thought Id add two disclaimers. Tube life and heat are very real. Having tubes in the preamp stage is alright. But having them in the power stage, especially big tubes like 300's and 805's in the Wilsenten R800i will dissipate a lot of heat. And in Indian climate, except in winters, will necessitate a AC if the room is anything but large.
The second is getting replacement tubes in India. Most of my purchases within India, have resulted in close to 10% failure rate of the tubes on arrival. And we cant even expect a refund. Basic tubes like EL34 and KT88's are still possible, but anything else, we have to import. My retubing costs for all the tube amps this year was significant. And I just bought entry level tubes from the maker and nothing exotic. And I hand carried them back, so thats without even factoring shipping and customs if imported.
Both the above factors necessitate a hard rethink in my opinion. And in our market, I would only suggest tube amps as secondary but never the primary amps for continuous usage. It is nice to listen to them once in a while or to end off a session on a pleasant note. But running hard for a few hours everyday, will cost both in electricity and tubes. I realized this late, and now have SS amps for primary duties, with tubes relegated to the special days.