True. I do use warmer than neutral amps admittedly :)
Don't notice any difference with volume level as a whole when activating the EQ. The new Foobar one which is pictured on the original post is very good. You can manipulate the volume level or choose not to. For me, a couple of db can mean dipping just below my thresh hold of annoyance in regards to instruments such as brass and even strings. Its a fine line, but I always have the mentality of less is more!
I spent years been against EQ of any kind. But the better technology these days with using computer based media players, I've found that the results can be very positive. And far less expensive than component rolling..