-The 4030M features a volume control and has a mono ¼" jack for the earset and an XLR-3F balanced audio input. The 4030M is a 1-CH IFB BELTPACK "PASSIVE DEVICE", function IFB Beltpack (listen only) . . .

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-The 4030M features a volume control and has a mono ¼” jack for the earset and an XLR-3F balanced audio input.

The 4030M is a 1-CH IFB BELTPACK “PASSIVE DEVICE”, function IFB Beltpack (listen only)

Read Less