You can change the load by using simple Y adapters and some loading plugs made from male RCA connectors and resistors of different values. I use this method with excellent results.
These are the adapters:Dayton Y Adapter
You simply plug the loading plugs into one arm of each adapter, and you plug you phono interconnects into the other arm of each adapter. Change plugs until you find the sound that you prefer.
I made my loading plugs myself, but you can probably have a local tech make them for you.
Credit to Audiogon member Nsgarch, who taught me this method.