I just received my Soundmagic HP100's! My Soundblaster Omni is in the mail and should arrive tonight as well, but for now I am testing it merely using my laptop's Realtek DAC/Amp (laughable, I know).
First impressions: I like the build overall! The HP100 is surprisingly light, and don't exert too much clamping force on my head. Compared to my Sony Pulse Elite, I feel like I can wear them for a lot longer because my head is no longer in a vice grip. However, the ear pads themselves are not as comfortable as my Sony Pulse Elite headset. Both headphones use pleather cups, but the Sony's are angled and have extra padding near the back, which I prefer. I am considering getting the SRH1540 replacement alcantara pads from Amazon but I'm not sure how to remove the pads on the HP100 without damaging them.
Although the HP100's are not hard to drive (I can listen to them at a decent volume just using my onboard headphone jack), they are noticeably quieter than my Sony Pulse Elites, which is no surprise. I'm sure they will sound a lot better once I get my Omni later today.
Sound wise, even without an amp I am amazed at how "clear" my music now sounds. However, this also comes at the cost of bass. I can't tell if the HP100's are bass-light or bass-heavy as I don't have much to compare them to, but the Sony Pulse Elites have much more immersive bass by far. Overall though, I much prefer the sound profile of the HP100 as I find the bass quite overpowering on my Sony's.
Oh, I dislike the audio cable. I don't get why Soundmagic chose a proprietary connector, as the coiled cable adds unnecessary weight and tends to "pull" my left headset down to the ground a bit. It's not a dealbreaker by any means, but I'd rather have a straight cable.
I haven't tested it in any games yet, but I will update later once my Omni comes in! I'm planning to take it through the ropes with some Borderlands 2
I do hope that an amp will improve the bass. Like I said, I don't mind that it's not as bass heavy as my previous headphones, but the lack of bass is noticeable in some songs like Massive Attack - Angel.