Check the listing for details. DBX Phase Invert, 20dB Pad, Meter Select Button Switch for 386. Condition: New. Listed at 9.99 USD. We have the lowest order cancellation rate in the industry. At Pixel Pro Audio, we are musicians, engineers, and artists that are passionate about the professional audio and recording industry. Based out of Appleton, Wisconsin, we specialize in gear for the musician and music professional.