• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

6GK5 OR 6AH5 for phono head amp


2009-02-26 12:58 pm
Which might be the better choice between these two valves with a view to building a phono head amp to compare with my present Jfet Hagerman ? I was decided on the 6AH5 but keep reading that Conrad Johnson used the 6GK5 for the initial gain stage on one of their better known phono stages. Or is it a question of not what you use but how you use it ?