HELIX vs HD500X comparison in Helix Posted April 24, 2016 Helix does have tons more headroom, which makes it much easier to build patches without worrying about clipping. It's fairly easy to clip the HD. Totally agree with that, I have found with the HD500 sometimes less is more .. Once you really spend some indepth time in the amp sim's and there settings like doubble tapping the enter button while on an amp sim you can dial things in and save the settings that suit your taste and or amplifier equipment. when ifirst got the HD500 i went from impressed to not 100% sure then once i really started to get my head wrapped around the unit i then relised i didn't need an real AC30 or the rest of the guitar amps i had bought, i guess it was part of my learning curve from what i wanted to all i really need. For me the HD500 does everthing i could ever want or need, infact to much, due to my lack of talent with the guitar it's self i could never max out what could really be done using the HD500, although it does not put me off trying lol ... i have improved although im not a dedicated player (yet) im purly in it for the fun.