I thought I'd add my impressions of the 2A3 vs 300B into the mix. In my system the 2A3 had a soundstage that filled the entire front wall (small room). It went well beyond the speakers. I didn't find this quality pleasing because I listen to a lot of cello, either solo or duet with piano. With the 2A3 the cello appeared to be much larger than was reasonable. Small jazz groups had some of this exageration as well whereas with a symphony orchestra it was fun but still not what I've experienced at the seats that I usually purchase.
The 300B by comparison had a soundstage that was more from speaker to speaker (perhaps a bit beyond). For me, the cello was more pleasing.
Finally, for those times that you just feel like you want to get visceral with the volume, the difference between 3.5 watts and 8 watts can make all the difference.
Perhaps others can verify or counter my impressions. They're my impressions for my system in my room and may not be the same for others.
My personal favorite is the type 45 tube. It puts out 2 watts per channel. I would describe it as having a very rich timbral quality. I also use a tube preamp (with 6SN7 tubes), finding that I much prefer that to going directly to the amp. I'd describe the preamp as adding richness as well (others might describe it differently). A very nice preamp with 12au7's had a refined almost sweet sound but I preferred the 6SN7's (though I could easily live with either but not without one of them).
Good luck, you've got a lot of fun ahead of you with tubes.
The 300B by comparison had a soundstage that was more from speaker to speaker (perhaps a bit beyond). For me, the cello was more pleasing.
Finally, for those times that you just feel like you want to get visceral with the volume, the difference between 3.5 watts and 8 watts can make all the difference.
Perhaps others can verify or counter my impressions. They're my impressions for my system in my room and may not be the same for others.
My personal favorite is the type 45 tube. It puts out 2 watts per channel. I would describe it as having a very rich timbral quality. I also use a tube preamp (with 6SN7 tubes), finding that I much prefer that to going directly to the amp. I'd describe the preamp as adding richness as well (others might describe it differently). A very nice preamp with 12au7's had a refined almost sweet sound but I preferred the 6SN7's (though I could easily live with either but not without one of them).
Good luck, you've got a lot of fun ahead of you with tubes.