Hey guys, I 've had the PODGO for more than a year but only really tried it the past two months or so. I used to own podHD as well .
I don't really use very high gain sounds, more bluesy, clean and breakup tones. In some cases though I like to switch between very clean and quite distorted sounds.
I am using the PODGO with a PRS CE 24 using mainly the coil split but I also use the humbuckers in some patches.
I had problem listening through headphones with both of those units ; whereas through with my (cheapish edifier 100$) studio monitors it sounds great, through headphones it sounded quite bad no matter the brand. I used some cheap ones to test in the beginning, then got shure SE215 for live usage and my last purchase were Beyerdynamic DT 770 Pro.
To make things worse I wanted to use pod go with IEM(which I had bought) but since the sound was bad through headphones it was not an option.
I tried several things and have improved drastically.
First of all in my case the headphones do matter. Cheap are a hit and miss I guess (miss for me), shure one's that are in ears are better but the beyerdynamics are clearly better sounding.
Now I tweaked some things (and lots still are there to tweak I am sure like bias sag etc which I havent really touched) namely:
-guitar in pad option :on. For some reasons the distortions/tube amps sound better to my ears with my setup both through headphones. "Fizz", for lack of a better word, quited down and the way distortion works in high frequencies was smoother.
-Make sure you know the difference between drive, master volume and channel volume and make sure you are not clipping. In a lot of cases I was working the amp simulation too hard by setting the master at 10 and the high frequencies ran wild when using distortion. Or even when using a breakup sound that sounded off when strumming a bit harder rather than playing single notes.
-Make sure you POD output is not coming in too hot through the headphones. I just realised that.
With the above I managed to get a quite good sound through the headphones. It is still not as great as the studio monitors though and I would love to hear suggestions on how to improve there.