Tube rolling question

My phono preamp uses four 6922 type tubes. Is there any problem with using two different types simultaneously. So, for example, can I use two 6922s and two 7308s at the same time? Thanks.

taxmandme01-23-2021 9:19pm

5 responses Add your response

taxmandme OP Details Discussions Posts This discussion Message User 9 posts 01-24-2021 at 12:53pm Copy Comment URL Report Comment Edit Delete Got it. Thanks for your help.
jjss49 Details Discussions Posts This discussion Message User 6,612 posts 01-24-2021 at 05:40am Copy Comment URL Report Comment Edit Delete keep the differences in tubes symmetrical by channel (i.e. always same combo in each channel)
petg60 Details Discussions Posts This discussion Message User 1,486 posts 01-24-2021 at 12:57am Copy Comment URL Report Comment Edit Delete Yes you can as long they are L/R, L/R. 6922 & 7308 are interchangeable. G
yogiboy Details Discussions Posts This discussion Message User 5,521 posts 01-23-2021 at 10:03pm Copy Comment URL Report Comment Edit Delete @ taxmandme Yes you can. Here are the type of tubes that are interchangeable with the 6922! http://www.vacuumtubes.com/6dj8.html
oldhvymec Details Discussions Posts This discussion 5,101 posts 01-23-2021 at 09:55pm Copy Comment URL Report Comment Edit Delete Wild guess in the L/R positions, yes. Not a lot of info to go on there.. NO with both left (6922) and both right (7308). They would work, but there will most likely be a sonic, and a gain difference.. I'm guessing the 6922 and 7308 are options or equals, there is a difference.. I didn't look up the specs on the valves.. Regards

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