Tubes for VTL ST-150

The standard 6550EH power tubes for the VTL amp are hard to find these days. Can other types of 6550's be used safely in this amp?

scottwsmith01-27-2023 10:00pm

noromance Details Discussions Posts This discussion Message User 10,054 posts 01-28-2023 at 05:18am Copy Comment URL Report Comment Edit Delete Gold Lion KT88 appears to be the consensus of owners. Upscale has 6550EH.
noromance Details Discussions Posts This discussion Message User 10,054 posts 01-28-2023 at 01:02am Copy Comment URL Report Comment Edit Delete Yes. See this thread.