JFET/MOSFET complementary-differential preamplifier - diyAudio
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Old 26th January 2011, 10:50 AM   #1
PMA is offline PMA  Europe
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Default JFET/MOSFET complementary-differential preamplifier

I have a new JFET/MOSFET complementary-differential preamplifier, please visit

PRE complementary-differential preamplifier

and see the attached images.
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Old 27th January 2011, 08:28 AM   #2
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Looks very nice PMA - simple and elegant!

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Old 27th January 2011, 08:51 AM   #3
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Thanks, Bonsai. And sounds good
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Old 27th January 2011, 08:52 AM   #4
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Yes simple and elegant (and good sounding), and important to mention IMHO: Its actually a John Curl design.
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Old 27th January 2011, 08:58 AM   #5
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It might be Erno Borbely as well, and others
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Old 27th January 2011, 09:14 AM   #6
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I like it

Last edited by Workhorse; 27th January 2011 at 09:17 AM.
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Old 27th January 2011, 09:22 AM   #7
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R1 and R2 values have to be selected according to Idss of the matched JFETs. But the task is not very difficult, and digital multimeter is enough to make it.
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Old 27th January 2011, 09:52 AM   #8
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Pavel,

How does this differ sonically to the Dispre 2 jfet ?
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Old 27th January 2011, 10:04 AM   #9
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Hi chlorofille,

yes, it sounds a bit different, and I would guess that listener's taste would judge.

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Old 27th January 2011, 01:33 PM   #10
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Hi PMA
I expected a small Power amp based on this topology as we see many pre amps are around. Probably you would be the one to come with some DIY design ?
thanks for bringing out JC' s ideas
Kannan
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