Jim believes in having separation of power between analog and digital components.
In my set up, I have my main gear in the back of the room - my sources and preamp. So I have one RLS-240 for my phono and line preamps. And another RLS-240 for my digital stuff.
In the front of the room, I have my speakers, subwoofer and power amps. This is where I use the RLS-240XF.
A friend of mine bought a preowned RLS-240 many years ago and in his system, the changes were nothing short of impressive. He eventually got in touch with Jim to get a newer one and the improvements were nothing short of remarkable. I remember when he loaned out his RLS-240 to us friends - and the drop in performance - he stopped listening to music in his system.