Jolida jd 100 owners

Thanks for your responses so far. Since I have the addiction known as audiofoolism, i'm sure I will be rolling tubes soon. I was just wondering the advantage of the shields because they are one more thing to take off and put on.

I took them off with know ill effects. The JD 100 didn't seem to have a major effect on the tubes as they tested new after years of use. (NOS Mullards instead of the stock) Never thought to use dampers.

I took them off and use Herbie's Tube Dampers.

I believe the 12AX7s are in fact used for gain.
I left them on when I had a JD100

I think their function is as a shield, not as a damper. I've had a couple of vintage amps that use a single metal-can shield only on the input/"gain" tubes. Then again, most modern amps don't seem to bother.

Not sure if they're necessary in this case, as I doubt they're using those 12AX7 tubes for gain - though it seems an odd choice of tube type for a line-driver.