9V Negative Polarity Switching Adapter for Roland CA-30

9V Negative Polarity Switching Adapter for Roland CA-30

9V Negative Polarity Switching Adapter for Roland CA-30

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AC DC 9V 1.5A power adapter Reverse Polarity Negative For BOSS PSA-120T GUITAR EFFECTS PEDAL PSA120T COMPATIBLE ADAPTER

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(1)AC Moto Pumb Polarity Switching Switch Positive and Negative Transfer Switch

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