Simple Operation but perfect function: press the knob to mute and press again to play. Three speed adjustment mode( half, one or two circles), easy to adjust the volume from 1 to 100. Lossless sound quality: it controls computer sound card by instruction and directly adjusts audio device volume without causing any distortion and noise. Mini size with exquisite appearance: stepper digital potentiometer with good hand feeling,high-end USB woven wire is more durable.
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