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.
I have an application (transformer coupled single ended headphone amp) that either of these should work fine in. Does anyone have a preference in the sonics of one over the other? Price seems to be similar.