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Old 10th February 2010, 05:41 PM   #1
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Join Date: Sep 2005
Default EF86 tube preamp

Hello
I would like to use these tube preamplifier to drive my Krell KSA-50 Clone .
Only problem the preamp has to much gain .
The recommended output load 200K or more !
It is possible to somehow lower the gain so I can use it .
Any advise welcome .
I love the EF86 tube sound . These is a simple , very nice tube preamp .

Thanks
Greets
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Old 10th February 2010, 06:04 PM   #2
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Location: Monroe Township, NJ
DC couple a ZVN0545A source follower to the EF86's plate. Cap. couple the source follower to a step down trafo. Sowter's model 9042 might be suitable.
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Old 10th February 2010, 07:00 PM   #3
Tyimo is offline Tyimo  Hungary
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Location: Hungary
Leave out the cathode bypass electrolitic cap and you will have much less gain, but still to high output impedance.....
Greets:
Tyimo
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