Tube DIY Asylum

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Again . . . How About a 27?

Posted by FlaCharlie on February 8, 2017 at 07:32:45:
I kinda lost track of this thread after it, predictably, veered off into suggestions for using rare and expensive tubes, setups that employed hundreds of LEDs, the need for complex heater schemes in order to operate quietly, and such stuff.
I'm a big believer in the KISS philosophy so I'll suggest - again - that you try a 27 using battery bias on the grid, or cathode if you prefer. I posted a schematic earlier.
No, it's not directly heated but that's the point - simple to heat using AC with minimal parts count. As long as you are using a preamp with sufficient gain - which it seems you are - it should work well and should give you, sonically, most all the benefits of a DHT, like the 26, without the complexity and related expense.
Others here DO have a much broader and detailed understanding of technical theory. That's not saying much because my technical abilities are essentially nil. So they may offer some objections. Possibly even valid objections.
Try it anyway. =8^)