Herman--TY. :-)
Gjames: "If you have a highly microphonic pre-amp (sic)...". Well, equipment very seldom is microfonic; TUBES are. So...if the tubes in a preamp* are highly microfonic, it probably is virtually unlistenable, with LOTS of ringing and banging in the signal. Of course it depends on how high 'highly' is.
The audibility of both tube rush/hiss and microfonics is proportional to how much a tube's input is amplified by itself and subsequent gain stages and by the sensitivity of the speaker. That's why, for instance, owners of high-sensitivity speakers have more trouble with these tube faults than others and why manufacturers such as Quicksilver and Music Reference make low-gain amps.
* It's preamp and preamplifier and not pre-amp or pre-amplifier.
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Gjames: "If you have a highly microphonic pre-amp (sic)...". Well, equipment very seldom is microfonic; TUBES are. So...if the tubes in a preamp* are highly microfonic, it probably is virtually unlistenable, with LOTS of ringing and banging in the signal. Of course it depends on how high 'highly' is.
The audibility of both tube rush/hiss and microfonics is proportional to how much a tube's input is amplified by itself and subsequent gain stages and by the sensitivity of the speaker. That's why, for instance, owners of high-sensitivity speakers have more trouble with these tube faults than others and why manufacturers such as Quicksilver and Music Reference make low-gain amps.
* It's preamp and preamplifier and not pre-amp or pre-amplifier.
.