ARC Ref 3: Tung-Sol 6550 in power supply?

This OP kinda spooked me about the Tung Sol 6550, so I ordered a 6550 WE from ARC. I should get it in a couple of days. In the meantime, I'm using the TS 6550. I'll swap the TS out for the WE when the WE comes in. I'll report back with reactions.

I like the Sed 6550 Winged Cs better than the WEs in my Ref Anniversary.

Barry, I ordered a SED "Winged C" 6550 from Upscale Audio. Kevin Deal called me after the order was placed suggesting I pick another tube because he wasn't satisfied his current batch of "Winged C" 6550s were reliable. Ergo, the Tung Sol 6550.

I expect to receive the ARC 6550 WE in a day or so. I'll swap it in and report back. In the meantime, I'm using the TS 6550. It works ok.

Also liked the stock ARC Sovteks better than the NOS Reflektor 6H30-DRs in the power supply.

Let's hope Kevin's current batch isn't the one I've been sampling over the past 2 years. I've bought at least 10 pairs from Upscale! There aren't a lot of reasonably priced and trustworthy sources for these.