I have recently purchased a POD HD500x as I am in a Pink Floyd tribute band and need to be able to dial in a range of FX without the outlay on all of David Gilmour's gear!
I have tried this unit through headphones direct, through headphones via a headphone amp, through in ear monitors connected via the balanced XLR and the line outs; through a 50 Watt all tube combo Hiwatt using the front in and 4 cable method plus just using the power amp, through floor monitors and direct into the desk and PA speakers. To date, I haven't been able to get a satisfactory tone through any of these.
I have been starting with just the empty patch to get levels right, then dialling in either an amp model and cab, amp model w/o cab or preamp model depending on connection method. They sound just about ok albeit a bit dull before an amp selected then with an amp/preamp sound ok for some basic picking and arpeggios but chords sound terrible.
When I dial in some compression and reverb and use the neck pickup on my strat I can get a nice Shine On intro lead tone but then when switching to the triads and power chords it all goes to pot. If I try and add any kind of distortion it just sounds terrible.
I have linked below to a sample of me just playing through each of the pickups with basic chord progressions. I would be interested to know if people think it should sound like the samples or that sounds a bit off. I've never had any issues with the guitar through my UX2 and Pod Farm or direct into my Hiwatt Combo.
If people think it sounds wrong I will contact Line 6 support and ask what options are to get it checked out.