Buy a Ayon They are far better built , and micro processor controlled , when a tube goes out a led comes on and you just replace that one tube ,
it monitors each power tube,
regular amplifiers all tubes are just averaged. So many more disasters possible
blown transformer,resistors . I had a canary and had it rebuilt ,not that great
transformers and chokes are the major component in tube amps
Ayon use a machined aluminum case , not cheap sheet metal like the others ,
plus they use teflon Copper tube sockets ,which sonicly make a big difference vs the cheap tinned brass , they use Top quality Lundahl transformers and chokes ,
I bought two of their products , and yes iowned the above products , Jadis is agood product but doesnot have all the safety features Ayon has.