Medium A. Silicon Tube Damper Rings, to reduce & absorb internal vibrations that lead to microphonics etc.
Internal diameter 28mm.
This size suits EL34, KT77, 6SN7, 6V6,..etc
Tube Damper Rings -Large
$2.80
Tube Damper Rings -Small
$2.20
Retainer for EL84 tubes
$2.50