It's not just really impact I'm looking for, I'm wondering if any of the mid-fi open backs have a thick bass. After some listening it seems I like a thicker sound rather then an airy one. I do enjoy the large soundstage and the wonderful midrange of the MA900 however.
The Hifiman HE-400 does seem interesting because it's supposed to have a nice midrange, and the bass extends deep so I'm guessing it would sound thick? It's also at an affordable price point too. I'm worried about the highs though because my ears are slightly sensitive and I do listen to some newer pop and rap music also. (I ofc also listen to some acoustic and stuff like Hans Zimmer and Klaus Badelt too which is why I enjoy the soundstage).
What about the K702 Annies also? They are a bit expensive for my liking but they seem comfortable, and based on reviews it seems their bass extends lower and some say it's got a thicker sound too it while not losing the large soundstage. That sounds perfect for my tastes, thickness with a nice soundstage still. I just wonder how well it would pair with me Fiio E17 because AKG's seem to be known to be a little bit tougher to amp to desired sound and at the price of an Annie, I probably wouldn't be upgraded to better amplification.