Hey there
You could have tagged me via @ as I didn't see the thread, but I have both headphones and can answer the question
Basically, I'll answer the question here since it might help a lot more people if they are facing the same question.
Will do it long style for the peace of mind
Ultrasone Signature Studio vs Ultrasone Signature DXP - Starting with the package, they are very similar, sporting virtually the same package. The materials and build quality is exactly the same, but Signature DXP is gray with Green accents, while Signature Studio is rather black with silvery accents. I got used to seeing DXP every day, but it surely looks different from most headphones I have. Both feel very good in hand, and both have excellent build quality. Both are simlar in build quality to Signature Pro and Signature DJ as well, both being made by the same amazing company, Ultrasone. Both isolate similarly well, and both are the same size, so both are very similar in comfort. Now, when it comes to their sound, they are somewhat similar, and you can see some similarities from the start. Both have excellent soundstage, with a landscape when it comes to size, more or less like HD800 from Sennheiser, Ultrasone being the company to go with if you're looking for large soundstage in a closed back headphone. When it comes to their signature, the main difference is in the bass, where Signature DXP has more bass in amount, with a slightly slower bass that feels bigger and more natural. The midrange and the treble are similar, with Signature DXP being a touch smoother, but not noticeably so. The dynamics and details are excellent on both, and the clarity is again, amazing on both, both being excellenjt choices for closed-back headphones. Now, the bass and the signature, Signature Studio can feel a tad bright since it has quite a healthy treble, but they are never harsh, being just open-sounding and airy, where DXP also feels meaty and impactful, having the same treble, but also with a ton of bass. Signature DXP is clearly more V shaped, as it sports more bass, and from the two DXP is probably more universal, where Signature Studio is as its name predicts, a really amazing studio headphone, but it is not quite as universal as DXP, which will work amazing with any music, from classical to metal, from jazz to punk to electronic to hip-hop, basically evereything sounds vivid and fun on DXP. By comparison, Signature Studio is more analytical, it brings forard more detail, and cuts with more precision, but it is picky, it reveals mistakes as well as details easier, being a better headphone if you like detail a lot, but it doesn't have the bass of DXP, which quikcly grew to become a personal favorite for me.
I think that you should go with the one that sounds better from that description, besides those details, they are basically the same headpohone.
I'll also load a photo of Signature DXP just for this thread, and maybe it helps understand how the color scheme is gray with green rather than the black and silver of studio
