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PH-1 MM Phono Project

September 1, 2014

I thought I would muse a little bit about the new stand alone phono stage I'm working on. It features 2-12AX7's and 1-12AU7 tube. The 12AX7 dual triode is wired in a common cathode gain stage followed by a passive RIAA eq. arrangment, followed by another 12AX7 gain stage coupled to a 12AU7 cathode follower used for an output buffer.

 

Both B+ and filaments are regulated DC, for lowest possible noise floor. The design was drafted  through a SPICE program to ensure the best possible performance.

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The PH-1 will be ready by the end of next week, looking forward to having this up and running , the front and rear panels will be in by the middle of...

PH-1 MM Phono

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