I worry about anything correctly describable as a volume pot (as opposed to a ladder stepped attenuator), since in my experience even an potentiometer with an audiophile rep, like Alps Black Beauty, say, degrades the sound and can take away some of the quality you may be paying major money for elsewhere in the phono preamp. Can you build your own stepped attenuator, or get one from Goldpoint, say? Or even build one into a phono preamp, in the sense of putting preamp and attenuator(s) in a single DIY chassis? I did that with an AHT DM-P phono preamp and have never looked back. You can even get wild and use Audio Note Japan tantalum resistors, for a warmer, more tube-like sound.