Hi Bob and thanks for that last reply. I am using good cables for my sound system .I bought them from sweetwater. I think the 1/8 connection sounded better then the USB becuase those on line BIAB demos are set at flat response and they are compressed files .So when i run it through the 1/8 plug to 1/4 im able to get more gain through the pre amp channel 7/8 becuase i have the low .mid ,and high adjustments And im able to doctor up those flat response demos . I understand now that i need to go all the fixing in BIAB first then out from USB connection It all makes sence now . Do i need to buy and audio interface or is my mixer with the USB connection the audio interface ? Thanks for your support

Mackie PRO FX8

Regards, Greg