Audio Designers' Tube Register, by Tom Mitchell About everything you'd want to know about the electrical parameters of many common preamp tubes: 6C4, 6C10, 6CG7/6FQ7, 6DJ8/ECC88, 6EU7, 6K11, 12AT7, 12AU7, 12AX7, 12AY7, 12AZ7, 12BH7, 12DW7 and 5751. Data is generated from actual field samples rather than factory "bogey" tubes so the data compiled is more likely to be what you'll see in real life tubes. Curves are given for mu, transconductance, plate resistance , plate and transfer characteristics, tables for plate resistance, much more.
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