Not yet no but you could well be right

I read that the Dot 1+ was very warm and that was exactly what I wanted given I already have the polar opposite of sharp.
I know that the Xonar adds bass unless you use Hifi mode, which disables all of the enhancements and sends a raw signal through. I tried that last night and yeah, they were lacking in bass a little. Well, compared to before any way.
One thing they did trip up on was live music. That was with the EQ enabled though as I like a little extra bass and treble usually. They seemed a bit muddy and clumsy on a couple of the songs I tried. You need to remember though, I have Grado RS2E. Probably the cleanest most stripped back set of headphones it's possible to buy. On live music they are absolutely unmatched by anything I have ever heard and their soundstage is just incredible. I'm constantly looking behind me when listening to live music lol.
Once the Graham Slee has warmed up (I've only just switched it all on) I will give it a try.
One thing that has absolutely amazed me about Planar Magnetic though is how well they hold their bass and still do other things properly at the same time.
Obviously with a classic headphone driver it's very similar to any other woofer. Paper/plastic and a coil. Once you start bogging down that driver with bass it tends to start falling off in the treble department. It's understandable really, given how it works. Planar have an enormous driver that's sandwiched under tension though, so no matter how hard you go on the bass the rest of the spectrum just seems to punch its way through. I've never known any set of headphones ever to manage that feat. Even with my Beats Pro which are absolutely enormous as soon as you raise the bass settings from 0 they just become clumpy, heavy and confused.
Which makes these a blast to listen to. I used to be into car audio back in the day so I do love my bass (it's kinda like sugar for me) and there are plenty of music types that I listen to that lend themselves to bass and being completely beat driven (Man Parrish, old electro and old hip hop) and these cans are just marvelous for that.
It's funny really. Every time I buy a new set of headphones (and I never sell them I just end up designating a function for them like Classical, Live, Acoustic ETC) it's like I've discovered my music collection all over again. So I end up listening to music all day long and noticing the new bass tones etc. Great hobby
What sound card are you using to drive the amp? or is the amp an AIO with a DAC ETC?
Ed. Just done some looking at it seems your unit is an AIO? DAC amp and soundcard?
You should be fine dude. You should get some sort of Asus AI suite so you can tune the sound if you need to.