The dx160 is pretty balanced soundwise, and you have that nice parametric eq. Honestly they're all very similar sounding with just various tweaks. Your iems or headphones are going to affect the sound more. I mean is there anything particular you don't like about the dx160 sound?
Because reading head fi can make you nutty- posts, impressions and ect. And eveything 'new' is pretty much awesome ha ha. And honestly everything I've listened to lately has sounded really good.
I mean everytime something new comes out it's hard to resist trying it out. Because in the back of your mind you're thinking- this could sound better than my current dap. And of course there's always something new coming around the corner.
I will say my first foray into portable tube use has been very enlightening.