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Old 14th November 2002, 12:01 AM   #1
Optical is offline Optical  New Zealand
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Default Quality phono preamp ?

Im after a quality phono preamp (maybe audiophile worthy) to use in a mixing desk..

Does anybody have any experiance with one they have tried and found to be good?
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Old 14th November 2002, 12:17 AM   #2
halojoy is offline halojoy  Sweden
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Default peranders - knows a lot about this

peranders have built an extreme phono amp
see his homepage

you do not need to build so advanced
there are good RIAA phono amps
using only one OPamp

here is a thread about phono amp peranders started
Really, really extreme phono, more extreme than mine
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Old 14th November 2002, 12:25 AM   #3
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Do a search on "Pearl" or "Ono". Both are very fine phono stages . Here are some opinions: Pearl Phono Stage
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Old 14th November 2002, 12:26 AM   #4
Optical is offline Optical  New Zealand
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oops i should elaborate, i need schematics..
soem feedback one ones you have tried out would be cool too

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Old 14th November 2002, 12:36 AM   #5
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Pearl schematic is here: http://www.passdiy.com/preamps.htm
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Old 14th November 2002, 08:59 PM   #6
Nicke is offline Nicke  Sweden
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Why not try this:
It is based on the phono preamp made by Thorsten Loesh and the original could be found at his homepage.
It sounds pretty good...
Thorstens homepage
[IMG]My version of a phono preamp[/IMG]

Nicke
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File Type: gif min riaa.gif (40.2 KB, 1603 views)
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Old 15th November 2002, 06:28 AM   #7
Electrons are yellow and more is better!
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Quote:
Originally posted by Optical
oops i should elaborate, i need schematics..
soem feedback one ones you have tried out would be cool too.
If you want a basic circuit, you have lot's of them. I have made a couple of Excel files for calcuclating the RIAA network. Drop me a note if you or somebody else want those.

With risk for a will only mention in that I have got pcb's for a modest RIAA amp..... The amp is based on http://www.linear.com/prod/datasheet.html?datasheet=202
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Old 15th November 2002, 08:44 AM   #8
halojoy is offline halojoy  Sweden
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WHERE would we all be without LT - Linear Technology
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Old 15th November 2002, 08:56 AM   #9
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Default Alaskan built phono preamp

Perhaps I can suggest one of my RIAA phono pre-amps. Its a great unit and is quite easy to build. Very low noise and offers adjustable RIAA equalization to optimize any cartrige. Each circuit board is for one channel.

Picture here:

http://www.audioamps.com/diyprojects...0301A-RIAA.htm

and another here:

http://www.audioamps.com/diyprojects...0301B-RIAA.htm

Some more info here:

http://www.audioamps.com/diyprojects.../0301RIAA2.htm

This preamp is also suitable for use in recording studios and can drive balanced 600 ohm lines. The NAB reproduce amplifier version has been used to replace stock reproduce amplifiers for the purpose of remastering old analog tapes to digital format.

I have not had enough free time to update my web site so some information is somewhat out of date.

John Fassotte
Alaskan Audio
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Old 15th November 2002, 09:22 AM   #10
Electrons are yellow and more is better!
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Default Re: Alaskan built phono preamp

Quote:
Originally posted by alaskanaudio
Perhaps I can suggest one of my RIAA phono pre-amps. Its a great unit and is quite easy to build. Very low noise and offers adjustable RIAA equalization to optimize any cartrige. Each circuit board is for one channel.
Pcb's looks very nice. Compare the link of Coph Nia MC amp when we talk about appearance.
Coph Nia MC Amp from Sweden

Interesting "star" concept of the layout.
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