|รูปของ Pico Power จาก http://www.innerfidelity.com/content/headamp-pico-power-portable-headphone-amplifier|
Overall the Pico Power is a highly talented, multi-faceted portable that isn't likely to leave an owner wishing they'd packed (or purchased) something else. It's small enough to pocket, has enough battery to easily survive a coast to coast flight with layovers and a week worth of nights in a hotel and is powerful enough to allow you to plug just about anything into it. So if that sounds like what you're after I don't think that I can give a higher recommendation.
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