I also have never used a DAC much before that. Besides the ones that come stock on computers and phones. Maybe I was noticing that more than anything. It'd be funny if I use the Sine with the regular cable, and see if I still like it.
Or get a desktop DAC and have all my other cans come to life.
Although, maybe the intense seperarion was what had me feeling like they were larger than they really are. I need to use them for more than 10 minutes...
Good separation and imaging can give you that effect sometimes, making it seem like the soundstage is wide. As I understand it, 'separation' refers to how distinctly you can hear each instrument separate from each other; 'imaging' refers to how precisely you can place instruments on the XYZ axes in the soundstage; 'soundstage' refers to the how distant things can sound from your head. I apologize if you already knew all that. I'm not trying to be pedantic, just making sure we are on the same page. Those three elements seem to go hand-in-hand, but not always. My Shure 846's have an average soundstage, but outstanding imaging, and outstanding separation. My Philips X2's have a very wide soundstage, but only average imaging. Etc. I would say that the Audeze SINE have narrow soundstage, but very good imaging, and great separation. For me personally, I don't think soundstage is nearly as important as imaging or separation, or several other elements of sound.
A good DAC would definitely improve all three elements, and an amp with low crosstalk would help bring out better soundstage and imaging. If you aren't used to using those you may be hearing the improvement they give, rather than the absolute quality. It also depends on your frame of reference, experience, expectations, preferences, and a hundred other things.
But, hell, man, if you like them, that's all that matters. This soundstage talk is only useful for helping people understand why they like the headphones they do so that they can buy headphones they like again in the future. Once you figure out what you like, you waste a lot less money in this hobby. (Notice I said 'waste' not 'spend'
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