Posted by Tnuctipun [ 64.12.116.14 ] on March 05, 2005 at 18:37:41:

In Reply to: Re: Guinevere - Next step? posted by colinhester on March 05, 2005 at 18:25:09:

hey-Hey!!!,
The 12B4 valve offers more than 6 dB gain reduction. 6.5 mu v. 16 from the 5687. Filament requirement is similar, and slightly increased amperage from the pair of 12B4's.

If you have a hair-trigger volume control with the 5687, the 12B4 is a good solution.
regards,
Douglas

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