Best isolation device for a tube pre-amp

They may not be current state-of-the-art, but the Townshend sinks are very good.

I got a very good improvement in mid-range clarity when I put a Townshend Seismic sink under my tube pre-amp. There was no downside to doing this, and the sink was much better than Vibrapods. The Seismic Sink is an air bladder type of platform like that mentioned by Karls above.

But interestingly, when I put the "sinks" under my Levinson transport and DAC, it badly screwed up PRaT. Cheers. Craig

Vibrapods are your best bet for the Buck.If you want .00675% improvent spend 300+ extra bucks on Rolerblocks.I dont think its worth it but.Thats my story and I am sticking to it.

I have used black diamond racing cones MKIII with very good effect ,tighteng up the low end more focus else where,then as my system was upgraded in several areas I found an unnatural hardening in the sound in that set up.Now I am using a $3, 12" bicycle tube with a corion shelf on top, best results with pre on it's original feet.This works well for tube pre but the best yet is SOLID TECH'S SILENT FEET under the CD player (could be used for pre as well but with diminishing cost/effect returns),look for major increases (all good)with this set up .oh ya all this is best on a cement foor.

tried the bicycle innertube sandwich that soundstage.com raved about and it was TERRIBLE. bass was slow & muddy.

everything improved substantially when i put hard cones under the pre which sits on an MDF shelf on a rack. look at blackdiamondracing and TG audio for starts and use a weight on top the pre as well...that ought to isolate it very well w/ no adverse effects.
rhyno