Preamp: -3.5 dB GraphicEQ: 20 0.1; 27 -1.3; 36 -2.1; 47 -2.7; 63 -3.2; 84 -4.0; 112 -5.6; 150 -6.0; 200 -4.8; 267 -1.6; 356 1.4; 474 3.2; 632 2.8; 843 1.4; 1125 -0.0; 1500 -2.8; 2000 -6.3; 2667 -9.3; 3557 -6.0; 4743 -1.8; 6325 -7.1; 8434 -4.6; 11247 -3.8; 14998 -10.9; 20000 -18.2