Sennheiser AB EW-D (R)

The Sennheiser AB ew-D Antenna Amplifier (520–608 MHz) is a professional RF antenna preamplifier designed to compensate for signal loss in antenna cables used with Evolution Wireless Digital (EW-D) systems. Featuring 10 dB amplifier gain, high RF selectivity, and effective interference suppression, it ensures reliable wireless performance in demanding installations. Powered directly via the antenna cable from the EW-D ASA splitter, it is ideal for extending antenna cable runs without compromising signal quality.

The Sennheiser AB ew-D Antenna Amplifier is a high-performance RF antenna preamplifier designed for Evolution Wireless Digital (EW-D) wireless microphone systems. Operating within the 520–608 MHz frequency range, this amplifier compensates for RF signal loss caused by long antenna cable runs, ensuring consistent and reliable wireless performance in professional audio installations.

Featuring a precise 10 dB gain, the AB ew-D provides just the right amount of amplification to offset cable attenuation while maintaining excellent signal integrity. Its highly selective RF filtering effectively suppresses unwanted interference from frequencies outside the operating band, improving overall system stability in complex RF environments.

The amplifier is powered directly through the antenna cable from the Sennheiser EW-D ASA antenna splitter, eliminating the need for an external power supply and simplifying installation. For larger antenna distribution systems, up to two AB ew-D antenna amplifiers can be connected in a single antenna branch, offering additional flexibility for extended cable runs.

Designed with rugged BNC connectors and a compact housing, the AB ew-D is an essential accessory for professional broadcast, live sound, theater, conference, and installed wireless microphone systems

Key Features

• RF antenna preamplifier for Sennheiser Evolution Wireless Digital (EW-D) systems
• Covers antenna cable losses to maintain strong RF signal performance
• Operates in the 520–608 MHz frequency range
• 10 dB amplifier gain
• High-selectivity RF circuitry for improved signal quality
• Effective suppression of RF interference outside the operating band
• Powered directly through the antenna cable from the EW-D ASA antenna splitter
• Supports connection of up to two AB ew-D amplifiers on a single antenna branch
• Compact, lightweight design for professional installations
• BNC RF connectors with 50 Ohm impedance