RCA Passive Phono for the PAS

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RCA Passive Phono for the PAS

Postby Geek » Fri Jun 10, 2016 1:18 am

Hi Folks,

Got a new offering and as per usual, going to offer an introductory exclusive for the DIY Tube crowd :))

The RCA phono preamplifier in the RCA Receiving Tube Manual got a 21st century upgrade, including a line driver.

Attached is the board I made (awaiting tubes for a listen :$ Parts and sockets not included ), a parts list and schema. No docs yet.

To use the board with a a PAS2/3, use a 10K dropper for the phono PSU instead of the stock 39K and use heater-balancing techniques (will post later)

Regular: $27.50 USD

DIY Tube Introductory: $25 USD!

RCA_Phono_Stage_Part_Numbering.png (10.9 KiB) Viewed 3908 times
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RCA_Phono.jpg (86.41 KiB) Viewed 3908 times
-= Gregg =-
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Re: RCA Passive Phono for the PAS

Postby jukingeo » Tue Mar 23, 2021 7:13 am


Did this project come to light? I only see the one introductory post. I am curious to the sonic quality of this design as I have a PAS pre-amp.
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