Oppo Digital announces HA-1 Headphone Amplifier
May 11, 2014 Comments Off on Oppo Digital announces HA-1 Headphone Amplifier
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“A motor-driven precision volume control knob enables both hand adjustment and remote control while keeping the audio in a pure analog audio path. Users have a choice of using the 4-pin balanced XLR or the traditional quarter-inch headphone jack”
Audiophilepure 
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