Tube Monoblock location? - Rack or near speakers?

I guess the governments,industry,and tube builders all wasted their time building tubes more resistant to vibration problems and failures.

Cooljazzcat , As with everything in this hobby you must try it yourself and then decide.Because a dealer or even a manufacturer tell you that one way is better then the other does not make it so.Only you can decide what you think sounds best.

Hifitime, if you think about it, a tube amp sitting beside a speaker is not going to get any more vibration than one far away. But really, if you try the difference between long speaker cables and short interconnects as opposed to short speaker cables with the amps near the speakers and long interconnects, the across-the-band improvement is instantly audible. IOW, apparently the vibration issue does not seem to play a role.

Ralph I always wanted to ask you if you are a fan of tube dampers for pre and power amps?

Atmasphere,I would never want 35'long interconnects in my home like you have.I have tried numerous combination's with interconnects and speaker cables.My friends and myself all agree and all have longer speaker cables instead.Lower level signals pose more of a problem with longer cables.In theory balanced cables may work,but they are even more prone to RF noise than speaker output levels,and this isn't news to you.All brands.The vibrations from the speakers causing abnormal microphonic music is a nightmare.I can't imagine anyone liking this effect.Microphonics have been a known and proven problem with tubes,and even capacitors too.Wilson Audio and other high end speaker builders even use vibration isolated crossovers to help keep vibration noises from affecting the sound.Tubes and speaker vibrations have never got along,and I've never seen any other solution to the problem other than locating them in the least vibration prone areas of the room.Every room in my home has different areas that work best for keeping tube and vinyl feedback down.Distance itself works good for starters.