I have a Marshall SL5 amp that i had been struggling to get into the distortion I wanted without being way too loud(even on 1 watt) for my family in my basement. I decided to purchase a Joyo OD pedal to try to get that tone at a lower volume. I'm having a hard time getting it dialed in. I'm not sure where to set the distortion on the amp. I guess in my mind i was thinking I'd have the clean tone from just the amp, then the distortion setting on the amp where i could get an ac/dc type tone, then kick on the OD pedal for the GNR type tone and 80's rock tone I'm going for. The OD pedal is sounding a little too muddy, the pedal has 4 knobs, volume, dirt, presence, and tone. I don't really understand what all these do. It almost sounds best when I don't have the distortion on the amp but turn on the OD. Any suggestions?