An all-tube preamp using tubes for voltage gain, tube followers to lower output impedance, and tube rectification represents the purest, gold-standard tube preamp design.
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Speaker
Kevin DiehlEvidence Quote
“you have tubes for voltage gain four of them and then a pair of followers to lower the output impedance naturally and then tube rectification so that is going to be the purest type of a tube preamp”
Source
What's More Important? Tube Preamp or Power Amp? Too Many Tubes? w/ Upscale Audio's Kevin Deal— Upscale Audio High FidelityCreated: 6/18/2026, 2:32:01 PM
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