6GH8A,6U8A,6AN8 for Phono stage

[pwgtang]

Hi, I had some of those tubes, is they good for Phono stage ? I only found one schematic from the old forums, do anybody had build Phono stage
with those tube? Any opinion are welcome.

 

[pwgtang]

I had breadboard a 6AN8A as MM phono stage, I look at the Dynaco mark3 circuit it used the 6AN8A as driver and phase splitter, than I think I can try
that circuit as the start point with some modifies and add the Riaa network. The result looks very good. It had about 46 db gain
at 1KHz. When input is 5mv, I checked the output at 1KHz ~1V, 20Hz ~10v, 20Khz ~200mv. The filament of the 6AN8A is supply by 6.1v regulator.
The high voltage is 400v regulator.