Photo 1 of Mackie Big Knob Series, Passive 2x2 Studio Monitor Controller (BIG KNOB PASSIVE) Passive 2x2 Controller663961050462

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Photo 1 of Mackie Big Knob Series, Passive 2x2 Studio Monitor Controller (BIG KNOB PASSIVE) Passive 2x2 Controller663961050462 Photo 2 of Mackie Big Knob Series, Passive 2x2 Studio Monitor Controller (BIG KNOB PASSIVE) Passive 2x2 Controller663961050462