Rolls DB14bPassive DI Boxwith

Rolls DB14b — compact passive DI box with stereo RCA and 3.5mm minijack inputs, individual L/R level controls, and a balanced XLR output for connecting consumer playback devices to professional audio systems.

The DB14b is designed specifically for feeding consumer playback sources — laptops, phones, tablets, media players — into professional PA or mixing equipment. Stereo RCA and 3.5mm minijack inputs cover the most common consumer output formats, while individual L/R level trim controls allow the stereo signal to be balanced before summing to the balanced mono XLR output. Passive transformer isolation keeps power supplies simple and eliminates the ground loops common when mixing consumer and professional gear.

Passive transformer isolation — no power required

Compact form factor for portable and installed use

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