Preamp: -4.7 dB GraphicEQ: 20 -2.3; 27 -2.4; 36 -2.4; 47 -2.7; 63 -3.5; 84 -4.9; 112 -6.1; 150 -5.9; 200 -5.7; 267 -4.0; 356 -2.4; 474 -1.7; 632 -1.1; 843 -0.4; 1125 1.0; 1500 2.4; 2000 3.3; 2667 4.4; 3557 3.7; 4743 2.3; 6325 0.8; 8434 -2.5; 11247 -8.1; 14998 -13.8; 20000 -25.5