Add a volume remote?

 If you are going to use a passive attenuator, remote or otherwise, you need to be certain that there is no impedance mismatch between the device putting signal into the volume control and the device being driven by the output of the volume control. That is sometimes a complex problem. For that reason, you might be better off with an active device. 

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