Hi, this is my first post so I'll apologize for any bad question formatting in advance. I am new to the audiophile community, so I guess I am totally new to tech. I decided to upgrade my current listening from casual appreciation of mp3 files on my iphone 5s to lossless files. Because of the storage needed I wanted a portable setup as I am always on the move. I have purchased a Fiio X1(1st gen) player and am also planning to purchase a pair of oppo pm-3 cans. The reviews for the pm-3 are split between positive and underwhelming, but for a good pair of neutral portable cans, the oppo's suit me (largely because of my eclectic music taste). I have noticed in many reviews that, despite the low impedance of 26 ohms, the pm-3 actually takes a bit more juice to drive in order to make the sound really "shine". I am currently looking at either the Fiio e17k or the e18 as options for a portable dac/amp to go along with the x1 and pm-3. Before I spend the money however, I was wondering if those more knowledgeable than me could tell me whether the x1 can drive the pm-3 by itself? Also, even if it can, would the sound benefit through the use of a portable dac/amp? I'd also love portable dac/amp suggestions besides the e17k and e18, simply my budget is around $100 or I would have just went for the HA-2 pairing. Thanks in advance!