noise thru tube pre??


Is it normal that if I tap on the pre chassis that I can here it slightly in the speakers (like a record player picks up taps and such) just curious Chad
chadnliz
Thanks alot for all info, it only does it when forced by tapping, so I am not going to be to pressed about it, as always you guys once again teach me new things and I thank you all!
Newbee, the only thing I disagreed with in your first post was the implication that microphonic tubes somehow always sound bad.

Enjoying the effect of a slightly microphonic tube is no different than rolling a Mullard for warmth or a Telefunken for detail. Every tube adds its own particular "signal enhancement". None of them comes with an accuracy meter.

I won't deny that microphonics aren't accurate. But like warm Mullards or super transparent CCAs, every tube adds it's sonic signature one way or another.

I think you hit the nail on the head when you said, "Thats strictly my choice. Others can tune their system as they wish."

That's the real joy of tubes versus solid state, IMHO. Tubes offer so many options for one to tailor the sound of their system until they find the "accuracy" that sounds right to them.
Does it strike anyone else as odd that we (Audiophiles) expend great effort in selecting isolation equipment (brass cones vs aluminum cones, tennis balls vs. ball bearings, etc) to isolate a component such as a solid state amp or preamp, or CD player (or even a cable) which you can tap on as hard as you want without ever getting the slightest piff of sound through the speakers, but are willing to sit a pair of monoblocks with exposed tubes, which are commonly microphonic, right next to the speakers?
Honest1, LOL. Just too much. I'm going to avoid temptation just this once. No comment!!