I have the 502 and one problem I have with it is that I must turn the main mix volume up in order to turn up volume on the headphones (unless the signal is coming in through the CD/Tape input). I would like to be able to turn up the headphone volume for signals coming through the regular line inputs without having to turn up the main mix volume. I'm wondering the the 802 allows this? Does anyone know because I can't seem to find an answer to this anywhere online. Thanks.