Quote:
Originally Posted by En_R 
New toy syndrome?
Again . CML, the Q-Jays have a much more balanced sound than the er4s/P. The bass on the er4p/s (unless you are driving from an amp) is in my opinion tight, compact... but lacking in depth, and impact.
However if you will invest abit more and buy an amp, the ER4 will get a much needed boost in the lows 
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ER4P has more bass if that's what you want, ER4S more details and clarity. You just can't have both at the same time, at least not with the single driver. Alternatively ER4S with foam tips has some warmth but lacks crispiness of triple-flanges.
I can only speak of Zune and Pico, but my experience that bass alone does not increase with the amping, only proportionally with the volume boost.
"Balanced sound" is an objectable thing, balanced for one can be overwhelmingly bassy for another. Not to say that Q-Jays are, but they certainly cannot reach ER4 details level, hardly any sub $300 IEM can.