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cartier20002000 20th November 2007 03:19 AM

Phono preamp mm

I would like to make a phono preamp type mm for my turn table. Somebody have something to propose.


Conrad Hoffman 20th November 2007 04:35 AM

You could do a lot worse than the circuit National Semiconductor has in their app note for their new LME opamps.

AMV8 20th November 2007 11:54 AM


Thanks for your comment. I just tried to find the application note but could not. Could you give me an op amp number to search against please.



Onvinyl 20th November 2007 12:07 PM

this is it, I think (page2):

AMV8 20th November 2007 12:12 PM



woodturner-fran 20th November 2007 02:25 PM

Search in this forum for the VSPS.

excellent phonostage

Thomo 22nd November 2007 07:42 AM

Hi. Has anyone tried the PassLabs Xono or Pearl Phono stages?


dangus 27th November 2007 03:08 AM

Check out the Hagerman Technology Bugle preamp kit; those are available on eBay for reasonable prices. Reviews suggest that they perform very well.
There's enough info there to build one from scratch if you wanted.

If you listen to house and techno music, you could build a classic DJ mixer phono stage: the schematic for the UREI 1620 can be found online. There's some images online of the 1622 phono card which clearly show the layout.

jcx 27th November 2007 03:17 AM

I strongly recommend against "passive eq" with flat op amp gain stages in RIAA preamps as shown in the national datasheet:

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