I am new to the Denon world as well as AVR-2307CI at any rate I cannot get any volume from any digital source. I have to crank the volume up to +15 and its still so low you cant hear much and it appears only to come from the front center speaker. I have tried several diffrent setups to no avail. I can connect my IPHONE via coaxal to the reciver and can get audio out of the front 2 (LR) speakers only if set to Large Size. I get no subwoofer sounds at all and it is a preamp sub. I have everything hooked up according to the manual but no go. I even tried to get the auto EQ setup to run, I hear left channel but when it goes to right it is too low to hear or pick it up. I have no idea what is going on.