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Analog Line Level Preamplifiers , Passive Pre-amps, Crossovers, etc.

Good, simple preamplifier
Good, simple preamplifier
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Old 15th March 2018, 11:27 PM   #1
Oskar2905 is offline Oskar2905  Poland
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Default Good, simple preamplifier

Hi.
I'm building Pavel Macura mosfet power follower. Project 83 - MOSFET Power Follower

In article it's written: 'How does it sound? Wonderful, regardless low or high volume. Entire spectrum from bass to high is perfect. It only needs a good preamplifier.'

In article death of zen is mentioned as good preamplifier for it. Do you have any idea of other preamplifier I would use or maybe DOZ is still best option?
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Old 16th March 2018, 12:53 AM   #2
Old'n'Cranky is offline Old'n'Cranky  Australia
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PRE amp

http://www.diyaudio.com/forums/analog-line-level/
Analog Line Level Preamplifiers , Passive Pre-amps, Crossovers, etc.
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Old 16th March 2018, 01:10 AM   #3
Mark Johnson is offline Mark Johnson  United States
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I like Figure 7 of the LSK389 application note, very much (.pdf link). Only you can decide whether it is adequately simple.
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Old 16th March 2018, 01:17 AM   #4
rayma is offline rayma  United States
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Quote:
Originally Posted by Mark Johnson View Post
I like Figure 7 of the LSK389 application note, very much.
That's a nice phono stage, but he needs a line stage with gain, since the amp is a power buffer with no gain.

Last edited by rayma; 16th March 2018 at 01:28 AM.
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Old 16th March 2018, 07:18 AM   #5
knutn is offline knutn  Norway
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This would be ideal?

AKSA's Lender Preamp with 40Vpp Output
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Old 16th March 2018, 09:03 AM   #6
Oskar2905 is offline Oskar2905  Poland
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Quote:
Originally Posted by Old'n'Cranky View Post
PRE amp

http://www.diyaudio.com/forums/analog-line-level/
Analog Line Level Preamplifiers , Passive Pre-amps, Crossovers, etc.
Sorry .
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Old 20th March 2018, 10:43 AM   #7
GumGum9000 is offline GumGum9000  Germany
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DCB1 or the BA-3
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Old 20th March 2018, 12:05 PM   #8
xrk971 is offline xrk971  United States
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Good, simple preamplifier
This is an excellent and simple preamp that can drive any amplifier. Even 0dB gain ones.

AKSA's Lender Preamp with 40Vpp Output

Here is 30Vpp into 25kohms:
Click the image to open in full size.

Just 5 actives and no hard to find unobtanium JFETs.
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Old 21st March 2018, 01:02 AM   #9
nezbleu is offline nezbleu  Canada
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Quote:
Originally Posted by GumGum9000 View Post
DCB1 or the BA-3
I love my DCB1 but it's wrong for this application, it has no voltage gain. I am told that most power amps have about 26 dB of voltage gain, so a preamp driving a follower would need that much or more.
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