Fender mustang micro

I got a fender mustang micro headphone amp thing, and I am trying to set the eq on it but it always has a weird reverb. I am playing a fender jazz bass with a hi mass and flats, I am trying to get a decent round tone with no effects on it so I can just practice and write on it does anyone who owns one have any tips for setting the tone? Just say the colours for each button you would recommend.