Yes, sure
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MP3,WMA,APE[/SIZE],FLAC,WAV[/COLOR][/COLOR]
[COLOR=000000][COLOR=000000]X1 is on par with HSA Studio, similar level. Even more powerful and loud
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[COLOR=000000][COLOR=000000]I was testing him with Etymotic ER4P(+S adaptor), Etymotic ER6i, Sunrise XCape IE, Sony MDR EX700, Sony MDR EX300, HiFIman RE0 (and some other phones) and different full-sized home/professional phones from AKG, Sony, Panasonic, Philips, but them only in audio shops. Results are perfect for this price range (and higher, but X1 is blind, so navigation is not easiest thing for 8Gb).[/COLOR][/COLOR]