Rack/component fans?

Buconero117,
I don't think you answered his question. Anyway how can a laptop cooler be used, as they are usb powered. (Lastly, is usb 12 volt, and if so can you cut off the end and attach a 12v wallwart plug?)

I'm likewise looking for a super quiet fan to cool my tube poweramp.

Thanks Buconero. Very helpful for me. These laptop cooling fans are the most compact for me as long as they are very quiet.