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Phono Stage RIAA

Posted on October 4, 2015 at 17:06:58

Posts: 860
Joined: January 8, 2003
Okay, so I'm looking into modding my PAS3X's phono stage and I've run across a post from '09 quoting Joe's mod but it's a bit different than what's on the Curcio PAS page. Which is the one I wanna go with? Here's the link to the thread (scroll down like 3 responses or so): http://www.diytube.com/phpBB2/viewtopic.php?t=3142


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RE: Phono Stage RIAA, posted on October 4, 2015 at 19:26:57

Posts: 451
Joined: December 29, 2012
You really might want to read this before making any decisions:


RE: Phono Stage RIAA, posted on October 5, 2015 at 12:42:25

Posts: 860
Joined: January 8, 2003
Whoa! Very interesting read!!! Thanks!!!


RE: Phono Stage RIAA, posted on January 28, 2016 at 11:05:08
I was skeptical about such claims that the PAS Phono Stage deviated from the established RIAA curve.

My ears never told me this, and I have always enjoyed the PAS Phono Stage through the years.

I started my PAS Phono adventures with a Linn K18-II, then moved over to a Grado Gold, followed by a Denon DL-160.

18 years, three different Phono cartridges and pure bliss.

What more is there for prime budget sound.... not much at the price.

Today I am spinning a Grace F9 on a Transcryptor Skeleton TT, and I am still happy.


RE: Phono Stage RIAA, posted on November 30, 2016 at 08:07:57

Posts: 1
Location: Rhode Island
Joined: November 30, 2016
I am planning on replacing the selector switch in my PAS 2 and using the "Special" and "Tape Head" inputs for high level inputs. The Phono input will go directly to the phono preamp, PC-6. I want to keep the RIAA eq as is and maybe increase the coupling caps to 1uF as many suggest.

What do I do about the 27Kohm resistor and the 750 pf capacitor that are attached to the middle wafer of the selector switch?


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