To "warm" up the sound of my T5, I've not had much success with the onboard EQ or compression (probably just me). Rather, I use an external Lounsberry "Tall, Fat & Wide" stereo pedal on the outputs. It adds harmonic distortion (to taste) that helps, since the keyboard's sound is very pristine. If you really crank it, it can get over-bearing. But in small-to-moderate amounts, it adds to the T5's (or for that matter, any instrument's) sound. Works great with Hammond clones, as well :-). IMHO, an underrated way to get pristine keyboards/synths/organs, to add some additional character and warmth to the sound.