I would try with a broad range of music, just to be sure. Also, RELs in that price range don't hit down to 20Hz (T/9i) drops off at 28Hz - that could be the reason why not hearing much difference - although, like I said - could be choice of demo material, too. Try different styles of music.
I think you have to go to the S5 to get down to 20Hz or even the next model up from that. talking big $ if you want the REL to plumb the depths
I think you have to go to the S5 to get down to 20Hz or even the next model up from that. talking big $ if you want the REL to plumb the depths