• 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.

GlassWare Atten-Ladder

I have had a solution like this. The only complaint would be the space required and the extra holes that need to be drilled on the front panel compared to a "simple" pot like an Alps. The purist approach of a couple of resistors in the audio path is hard to beat with a pot though.