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 10,497 posts 01-28-2023 at 01:02am Copy Comment URL Report Comment Edit Delete Yes. See this thread.
scottwsmith OP Details Discussions Posts This discussion Message User 64 posts 01-28-2023 at 03:48am Copy Comment URL Report Comment Edit Delete So if I read this correctly, a KT88 would be a workable replacement, and other 6550's besides Electroharmonix would also be oK?
noromance Details Discussions Posts This discussion Message User 10,497 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.