"Tube Dampers for 12AX7/12AU7/EL84"

I've experimented with a set of four EAT Cool Dampers on the dual triodes of my Prologue Four power amp. I've rolled many a tube in this amp and my preference is to run without the dampers, after a trial of 12 months or thereabouts. I know this is an obtuse statement but I've convinced myself that there is a little more air when not using them, and my system needs this, or it can sound closed in.

Presently, I use 5751 valves in the line stages of my two Croft Micro 25s. The effect of Cool Dampers on these is less subtle and I prefer to run with them. They contribute positively and reduce microphonics.

As per usual, there is no universally 'correct' answer here... Tube dampers *can* work, on the right tubes, with the right equipment, and in the right system. So suck it and see :)

I've tried them on numerous occasions, and whilst often initially perceiving a sonic improvement, I normally end up removing them fairly quickly, usually after wondering why I've not been listening to music as much since fitting them....

The key lies in their description: tube dampers. Dampen things too much, and you can over-egg the pudding, and also 'dampen' the music - so be careful!

Marco.

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Originally Posted by camtwister

Presently, I use 5751 valves in the line stages of my two Croft Micro 25s. The effect of Cool Dampers on these is less subtle and I prefer to run with them. They contribute positively and reduce microphonics.

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I think that might just be the last link in the Micro 25 chain :) Where's hifi dave when you need him. He MUST have a set of coolers-dampers-whatever somewhere in his drawers :eyebrows: