The Sennheiser AB 4-GBW is a filtered, inline antenna booster/amplifier module with BNC connectors, designed to offer typ. +12dB of boost to compensate for signal losses created by long antenna cable runs.


The AB 4 is fully compatible with all legacy evolution wireless systems. Additionally, the AB 4's filters have been expanded to support the bandwiths up to 88 Mhz. The Sennheiser AB 4 antenna booster is available for hire from HD Production now, along with a large inventoryof wireless production equipment.

Sennheiser AB 4-GBW

    • Frequency range AB 4-GBW: 606-678 MHz

    • Gain: approx. 12 dB

    • Power supply: via antenna cable from ASA 214 or EM 2050

    • Connector: BNC

    • Dimensions: 12.5 x 8.2 x 2.6 cm

    • Weight: 184g