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the build quality seems feeble but you do hear a difference for some headphones. would suggest to anyone else who doesn't want anything complexPublished 22 months ago by caleb
Didn't add any apparent amplification/volume, but it did improve the overall sound of my mp3 player, It's a PITA having another unit to charge and put inline with another cable. Read morePublished on July 21, 2013 by Brett Lewis