I like the sound quality of 45, 2A3, and 300B, basically any low-mu DHT with parallel plate construction.
You can never have too much power! You don't have to use it.
I would go with 300B or 2A3 for all sections. The important thing for the midbass is the damping factor, and 300B is best at it, with 2A3 very close. In fact, modern 2A3 and 300B is the same, just different voltage filaments.
If you need a lot of tubes, it is best to go for tubes that are still in production. Some NOS tubes are cheap today, but won't be in 10 years as inventory runs dry. You'll have to rebuild your amp for new tubes, with new and expensive output transformers. In 100 years, they will still be making 300B tubes.
You can never have too much power! You don't have to use it.
I would go with 300B or 2A3 for all sections. The important thing for the midbass is the damping factor, and 300B is best at it, with 2A3 very close. In fact, modern 2A3 and 300B is the same, just different voltage filaments.
If you need a lot of tubes, it is best to go for tubes that are still in production. Some NOS tubes are cheap today, but won't be in 10 years as inventory runs dry. You'll have to rebuild your amp for new tubes, with new and expensive output transformers. In 100 years, they will still be making 300B tubes.
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You're using 45 and complaining about the price of a 300B?
Use 300B for all, or if you need much more power, use the GM70
I got a dozen NOS 45's for $90. You can't beat that price with 300B! I paid a fortune just for a pair of EML 300B.
I was not joking before when I said GM70. Cheap and you can use then lower voltage, and still get great bass.
There are an amazing number of other options available, so many in fact I only suggested the obvious DHT.
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