Let's frame this question another way. Other than when there is an impedance mismatch between them, are there any other circumstances under which a tube preamp + SS amp combo will not work well?
Tube Preamps that work well with SS amps?
I'm looking for a tube preamp after years of strictly SS. My amps will remain SS. Which tube preamp(s) in your experience mated well with a SS amp? I'm trying to avoid the odd phenomenon where tube preamp + SS amp = slow, soggy sound in spite of benign impedance characteristics
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@twoleftears The main issue is probably how well the preamp does in the bass. This is an impedance issue, but its the impedance of the preamp at 20Hz, not 1KHz, where output impedance is usually measured. With most tube preamps the output impedance rises as the frequency goes down; at 20Hz it can easily be several times higher than its 1KHz value. This is part of why solid state preamps might play deeper bass- they may have a direct-coupled output. You can have a direct-coupled output with tubes too; there are only two preamps I know of, the Atma-Sphere preamps which have a balanced output, and the Messenger which has a single-ended output. |
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