I know this isn't a technical forum, but what exactly are you trying to do? I would not consider 5670 and 6922 equivalent tubes.
I would like a spare set for a Cary HH-1 headphone amp. The 5670 works just fine with the appropriate socket adapter.
Thanks for the link. I did see those yesterday and could be an option for me. The iFi adapters are sturdier looking and apparently have an internal bypass cap for noise reduction (so they say).
After try to avoid caps on my life, I discover that is a solution for a not real problem. Is safety and you never will listen the difference
6922 is a different triode, but actually you could recognize speciall sound replacing an relative expensive tube with a cheap one. If you need 6922 or E88CC I have some.
The following is a quote from iFi Audio regarding their NOS 6922 tube matched pair utilizing the GE 5670:
"The iFi solution was to machine-fabricate a special ceramic adapter with a miniature capacitor circuit to bring heater supply circuit noise (a common issue) sharply down".
"The iFi solution was to machine-fabricate a special ceramic adapter with a miniature capacitor circuit to bring heater supply circuit noise (a common issue) sharply down".
Thank you dady but I do have enough 6922 & 7308. I was hoping to find a spare set of the iFi GE 5670 for back up.
If it's a cap from the heater supply to the shield pin, you'd have to be careful with the DC voltage rating on that cap in case the heater supply is elevated.
If you are still looking for these I have a pair. One box is sealed one isn't but they are brand new.