Add a volume remote?

Khozmo, with the shunt and series resistor upgrades.  Send him the input impedance of your amplifier, and he'll recommend the correct resistance for the build.  

This unit emphatically replaced a Slagle autoformer volume control, which is no slouch itself.

I’m using a Khozmo shunt attenuator in my preamplifier. It is indeed very good. But in my case it sits inside an active circuit.

http://www.audiocubics.com/specs.html  

I can add a remote volume control to the Art Audio Vinyl One models.  It adds an extra $250 to the price.  The base unit is spectacular.  

https://artaudio.us/collections/preamps/products/vinyl-one-mm-mc-phono-stage