Amazon.com: SGPRO Active Direct Box, Recording Signal DI Box for Musical Instruments as Guitar, Bass Guitar, and Keyboard Live Performance or Studio, 1/4" to XLR, Ground Lift 48V Phantom Powered Compact Unit :
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NEW DB-01 Passive XLR to 1/4 Direct di Box with ground lift for guitar keyboard | eBay
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What does a DI box do? Why use one? - RouteNote Blog
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ProD2 stereo passieve DI box
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SGPRO Active Direct Box, Recording Signal DI Box for Musical Instruments as Guitar, Bass Guitar, and Keyboard Live Performance or Studio, 1/4" to XLR, Ground Lift 48V Phantom Powered Compact Unit :