I might have some info to help, my apologies if someone has already mentioned, as I did not go thru all responses. I had a huge problem where i could not get the hi end tones to cut thru during a solo, etc. My Headrush 112 was so loud, but I wasn't cutting thru the rest of the band during solos, etc. In each preset, I dragged the treble all the way to max on all effects, and was still not cutting thru (all the while, headphones sounded GREAT). Then, I discovered "Global EQ", which obviously gives you the starting point for ALL presets that you have saved. Apparently, all of the tone-based settings for each pedal on the presets are actually "fine-adjust" settings, while the Global EQ is the "coarse-adjust"....Well, I got into Global settings, dragged the high-end up on the EQ, and it cuts thru like butter now. I understand your issue in your post was "FRFR vs. Headphones" sound, but my output sound is exactly what I had hoped for. I honestly don't understand why Line 6 doesn't mention this on Page 1 of Quickstart instructions, as it probably would alleviate many complaints, and if it is in the manual, sorry if I missed it...Anyways, hope to hear if this helps, and Rock On