COUNTERPOINT HYBRID PHONO STAGE UPGRADE


This is my first post, but I am well acquainted with this forum. I have recently imported a SA 5000 from a member and I am very impressed with the build quality, and performance of the line stage. It is a vast improvement over my modified SA 3. I have both service and owner's manuals, and the documentation is equally impressive, and worth the asking price.
I intend to do some of the Alta Vista upgrades, and would like to remove the JFET and inductor from the cathode circuit of the phono 1st gain stage as a starting point, and replace with a resistor, using the low gain common-cathode triode option for MM cartridge only.
I have no philosophical objection to hybrid circuitry, and I guess that Mike Elliot would have used the ARC SP11/15 as a reference for his own designs. Tube purists may have scoffed at the hybrid ARC products, but the people who make a living out of reviewing them, raved about it.
However, the Alta Vista upgrades for the SA 5000 and SA 9 involves removing the SS buffers and cathode JFETs, and associated circuitry. Any assistance in providing feedback and guidance on tackling these mods would be greatly appreciated.
Thanks in advance.


ozdiyer

Showing 2 responses by jmcgrogan2

Sorry to break the news to you, but Alta Vista went out of business about 4 years ago. Michael Elliot has retired.

http://www.whatsbestforum.com/showthread.php?6805-Alta-Vista-Audio-closing-it-s-doors

I believe there is an Audiogon member named Bigkidz (Peter), who does some Counterpoint mods, and maybe some other folks as well. 

Good luck.