Sennheiser EW-DX EM 2 (R1-9) Dual Wireless Receiver Two-channel digital half-rack (9,5") receiver for use with Evolution Wireless Digital handheld, bodypack and tablestand transmitters. Extended 88 MHz switching bandwidth, intermodulation-free operation for up to 293 channels with secure AES-256 encryption and redundant power supply via Power over Ethernet (PoE). Sennheiser EW-DX simplifies your professional workflow by utilizing refined technologies to deliver a digital UHF system that can be scaled with ease. With its advanced feature set and hardware options, classrooms, corporate campuses, and live performance productions benefit from a network-ready system that is designed to integrate seamlessly. AutoScan quickly assesses your environment and uses equidistant channel spacing to deploy frequencies while tools like Sennheiser?s Control Cockpit, Wireless Systems Manager, and Smart Assist App allow you to monitor your system remotely. Features Two-channel digital half rack (9.5") in rugged metal housing Up to 88 MHz switching bandwidth Low latency of 1.9 ms wireless transmission thanks to proprietary Sennheiser Performance Audio Codec (SePAC) 134 dB input dynamic range - no need to set gain on your wireless transmitters at all, thanks to proprietary Sennheiser Performance Audio Codec (SePAC) Equidistant channel spacing to easily allocate intermodulation-free channels: Standard Mode with 600 kHz spacing for up to 146 channels; Link Density (LD) Mode with 300 kHz spacing for up to 293 channels Network enabled for expanded remote control with Sennheiser Control Cockpit, Wireless System Manager and 3rd party media control systems via plug-in Power over Ethernet (PoE IEEE 802.3af Class 3) Ethernet connectivity (IPv4 and IPv6) Secure transmission of confidential content using AES 256 encryption AutoScan-feature quickly scans your environment and deploys frequencies with equidistant channel spacing - even without RF knowledge Link Quality Indicator (LQI) showing the quality of the links separate to the RF levels Remote control via Smart Assist App over Bluetooth Low Energy (BLE) at distances up to 25 meters Clear and easy focused user interface with OLED display, jog wheel navigation and control buttons Selective headphone output with volume control on front panel Extended menu settings such as custom frequency list, selectable sync parameter and walk test External PSU 12V/1A Worldwide usage (specific frequencies subject to local RF regulations) Specsification Dimensions: 212 x 44 x 189 mm Weight (g): approx. 1000 g (without antennas and power supply) Audio output: 2x 70 mW @ 32 ? Latency (ms): 1.9 ms Power consumption (Amp): max. 12 W Connection: Wireless Total harmonic distortion (THD): -60 dB for 1 kHz @ -3 dBfs input level Latency (ms): 1.9 ms Audio frequency response: 20 Hz - 20 kHz (-3 dB) @ 3 dBfs Dynamic range ( ): 134 dB Audio output level: 18 dBu max. Connection: Wireless Audio output: 2x 70 mW @ 32Ohms Operating relative humidity (? %): 5-95 % (non-condensing) Operating temperature (C): -10 C - +50 C (14F-122 F) Battery included: N Power consumption (Amp): max. 12 W Charging current (mA): ?1A Input voltage: 11-13 V = or PoE IEEE 802.3af Class 0 (CAT5e or higher) Transmission power (mA): BLE: max. 10 mW EIRP Dimensions: 212 x 44 x 189 mm Height (mm): 73 Length (mm): 405 Weight (g): approx. 1000 g (without antennas and power supply) Width (mm): 350 Product height: 73 Product length: 405 Product weight (g): 1000 Product width: 350 Bluetooth transmission frequency: 2402-2480 MHz