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Look for 12AU7 Preamp Circuit .
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Old 31st May 2006, 01:31 AM   #1
RCA245 is offline RCA245  Taiwan
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Join Date: Apr 2005
Location: Taipei
Default Look for 12AU7 Preamp Circuit .

Hi everybody.
I need preamp circuit of 12AU7 SRPP contact to 12AU7(half ) Cathode Follower.

Hope to offer information to me.Or can teach me how to design.

Thank you very much.
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Old 2nd June 2006, 12:13 PM   #2
lt cdr data is offline lt cdr data  Wales
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Location: earth

here's the input stage, you mean direct coupled to the cathode follower?




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Old 2nd June 2006, 02:02 PM   #3
Giaime is offline Giaime  Italy
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The last circuit has an abnormally low current in the mu-follower, it definitively isn't much hi-fi sounding with gobs of second armonic.

But many people like that...

Dear RCA245, i suggest that you purchase TubeCAD from Glassware, it can help you design your SRPP.

I would also suggest of using another tube instead of 12AU7: 6DJ8/ECC88 is a good tube for SRPP, also 6SN7 is.
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