Look for 12AU7 Preamp Circuit .

RCA245 · 31st May 2006, 01:31 AM

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.

lt cdr data · 2nd June 2006, 12:13 PM

http://www.audiofanatic.it/Schemi/Ti...pre_6SN7_4.jpg

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

another@

http://www.audiofanatic.it/Schemi/Ti...pre_6SN7_4.jpg

finally!!

http://www.triode-systems.com/module...oto.php?lid=26

Giaime · 2nd June 2006, 02:02 PM

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.

31st May 2006, 01:31 AM	#1
RCA245 diyAudio Member Join Date: Apr 2005 Location: Taipei	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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2nd June 2006, 12:13 PM	#2
lt cdr data diyAudio Member Join Date: Dec 2003 Location: earth	http://www.audiofanatic.it/Schemi/Ti...pre_6SN7_4.jpg here's the input stage, you mean direct coupled to the cathode follower? another@ http://www.audiofanatic.it/Schemi/Ti...pre_6SN7_4.jpg finally!! http://www.triode-systems.com/module...oto.php?lid=26

2nd June 2006, 02:02 PM	#3
Giaime diyAudio Member Join Date: Oct 2004	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.