BIGGUY4x4Armatures IEMs?
Only if your source is not low output impedance enough. Check online and see if you can find out if your source's output impedance is less than 10ohms. The closer to less than 1ohm, the better because of the crossover circuits in the earphone.
BIGGUY4x4If your current output device has an output impedance greater than 1.5 Ohms, then yes. ALmost any of the midrange products from FIIO will work. Check out the A3 for something both portable, and desktop-able (plays while charging). :)