http://lists.contesting.com/_amps/2007-12/msg00292.html
On Sat, Apr 3, 2010 at 9:08 AM, Jim Brown <jim@audiosystemsgroup.com> wrote:
> I have come into a pair of these tubes, which appear to be private-labeled
> 3CX800A7s. They are obviously used. I stuck them in my Titan 425 to see how
> they work. They seem to need about half as much drive as the tubes they
> replaced, but draw a lot more grid current than I'm used to.
>
> What can anyone tell me about these tubes?
>
> 73,
>
> Jim K9YC
>
>
>
>
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