Lol. It does take you a bit by surprise. I cant really comment on both your sut and the cart as Ive not used them, but I find the unit very good... silly good for the money, and full of energy, yet very soulful with rightmusic. Sinatra sounds fabulous out of my speakers. very rich, deep and yet velvety at same time, just like ol' blue eyes should. Rock has kick ass sharpness too. You might need a bit of work on the 103 yet I dont know. Try without sut and see if it changes in any major way. Might be the sut giving some sonic character