SB-401 LMO tube

[Joseph Filice]

Hello,

I'm working on an SB-401 and noticed that there is a
6CB6A tube in the LMO rather than the specified 6BZ6.
I wondered if this was some sort of well known and
approved mod, or maybe just the closest the former
owner could come to the proper tube in a pinch.  My
Sams tube substitution handbook doesn't list them
as substitutes for each other, though they do have
substitute tubes in common.  I have a 6BZ6 to put in
there, but I just wondered.  Thanks.

Joe Filice KQ6GL

Sponsored by the City of Tempe 

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