Tube dampers on your tube s in you CDP or DAC?

i have used E.A.T. dampers on tubes in a cd player. they have been in production for several years. they are aluminum on the ouside, with several teflon inserts placed in the inner grooves.

at first i thought they "warmed" up the sound, i.e., reduced harshness and smoothed out the sound. now, i am not sure. i recently compared a damped and undamped tube and did not hear much of a difference.

as for herbie's tube dampers, i thought they increased resolution and reduced warmth. i do like herbie's other products, such as anti-resonant devices.

I used both rubber and silicone dampers on a CJ dac and pre.They both worked great though the silicone did melt a tiny bit.Tightened up the sound and had better bass and highs.But tried them on my Vincent cdp and it just sounded constricted.

"I used both rubber and silicone dampers on a CJ dac and pre.They both worked great though the silicone did melt a tiny bit."

This is true, some will melt and adhere to the tube. Be wary of the cheap orange dampers sold on ebay. As I said before, I use Herbie's and they are very well constructed.
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I use them, not sure which ones, but these are massive and good.But I haven't noticed any improvements in sound at all, to be honest.