SR 4000

True diversity receiver with all-metal case

30 MHz wide UHF band with up to 1200 selectable frequencies

Pilot™ tone data transmission for battery status monitoring and tone code squelch

PC interface for remote control and status monitoring; logic output for controlling external devices

Backlit, programmable color display and jog wheel for ease of use

Auto Setup, Environment Scan, and Rehearsal functions for easy setup


The new SR 4000 is a state-of-the-art, true diversity receiver that provides maximum ease of use and the most useful functions in its class. Many features of the SR 4000 were never before available or limited to extremely expensive systems.

The accurate battery life readout is an invaluable advantage in live sound applications. The transmitter uses a pilot tone to transmit battery status data to the receiver that displays the remaining battery capacity in hours.

The pilot tone decoder also detects and displays other important information including the current position of the MUTE switch on the transmitter.

The integrated software does not only permit automatic setup and frequency scanning but remote control and monitoring from a PC via a dedicated interface as well. Optional MCS 4000 Mission Control Software makes setting up and monitoring highly complex systems incredibly easy. A logic output allows remote control of specific functions on an external device, e.g., an automatic microphone mixer.

Naturally, the SR 4000 operates in an extremely wide UHF band (30 MHz) and each frequency preset provides up to 24 intermodulation-free subchannels*. The maximum number of selectable frequencies is 1200. The large, backlit color display and a jog wheel make the SR 4000 easy to use and a programmable warning light indicates selectable critical conditions within the system. Housed in a half-rack, all-metal case, the SR 4000 is the most compact, reliable, and powerful UHF receiver in its price bracket.


* The number of channels that can be used simultaneously depends on local frequency plans.

HT 4000

Wideband UHF handheld transmitter for use with interchangeable microphone elements,
equipped with D 880 WL 1 element.

30 MHz wide UHF band with up to 1200 selectable frequencies

Backlit display and jog switch for ease of use

Up to 30 mW RF radiation for reliable transmission

Operates for up to 15 hours on dry batteries, 12 hours on optional BP 4000 battery pack and displays remaining battery life


The HT 4000 is a professional handheld transmitter with a rugged body and connects to a choice of six different microphone elements to cover a wide range of applications. The 30 MHz wide UHF band provides up to 1200 selectable frequencies and several preset frequency banks for various countries make it easy to set up a multichannel system.
A pilot tone system continuously transmits transmitter status data including MUTE switch position and remaining battery life to the receiver. Integrated charging contacts let you charge the optional BP 4000 battery pack without having to remove it from the transmitter. After only one hour, the battery pack will be fully charged and you can use the transmitter for 12 hours continuously. The HT 4000 will transmit the excellent audio of the AKG microphone elements in all its splendor even over large distances or in difficult environments.

Available microphones for HT 4000: Dr WL 1, WL 1, WL 1, C 5900 WL 1, C 535 WL 1, C 900 WL 1, C5