Sony PHA-3AC-quality headphone amplifier black

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  has a battery ... or not a battery!?!  

  Sony PHA-3AC-quality headphone amplifier black (Electronics)

  Hi, I can only agree with the feedback unfortunately. I purchased a device from Amazon and even in another shop. Both came as a PHA-3AC (difference significant) and not, as in the US and Asia-selling version PHA-3 (without AC and thus with battery) .
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  Sony PHA-3 sounds great  

  Sony PHA-3AC-quality headphone amplifier black (Electronics)

  the Sony PHA-3 sounds fantastic-with 10-strikingly precise and musical as the portable Onkyo quality headphones such as Ultimate Ears UE. He has indeed a built-in battery; see more about Sony PHA-3: "Power DC 3.7 V: Built-in lithium-ion rechargeable
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