From looking the data sheets over, it seems like a 6DV4, or a 6CW4 (for more gain, or smaller input signals) for example, would be ideal when loaded with iron. High mu, combined with low Rp - so you would get all the gain (68 in the case of the 6CW4), and still maintain excellent frequency response - something that's impossible with 6SL7's and other oldies.
Does anyone have experience with these micro tubes?
Does anyone have experience with these micro tubes?
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