Evolution Wireless Digital EW-DX is Sennheiser’s professional digital UHF platform, offering AES 256 encryption, up to 88 MHz switching bandwidth, equidistant frequency grid and automatic frequency setup via the Smart Assist app or Wireless Systems Manager. This set ships as a complete vocal radio mic system with handheld transmitter, rack receiver, PSU and rackmount hardware. Band variant: S1-10, 606 – 694 MHz (UK CH38 and above). Operation within UK CH38 is covered by an Ofcom shared PMSE licence; frequencies above 630 MHz require a coordinated licence.
Key Features
✓Professional digital UHF platform with AES 256 audio encryption
✓Up to 88 MHz switching bandwidth with equidistant frequency grid
✓134 dB transmitter input dynamic range, no audio gain staging required
✓Automatic setup via Smart Assist app or Wireless Systems Manager over network
✓Persistent e-ink display remains readable when the transmitter is powered down
✓Compatible with Sennheiser BA 70 Li-ion pack and CHG 70N networked charger
✓UK band S1-10: 606 – 694 MHz (UK CH38 and above)
✓MMD 835 capsule: cardioid dynamic capsule tuned for vocals with controlled presence lift
✓RF output: BLE: max. 10 mW EIRP
✓Switching bandwidth: 200 kHz
Specifications
| System | Audio link frequency ranges |
| System: R1-9 | 520 – 607.8 MHz |
| System: S1-10 | 606.2 – 693.8 MHz |
| System: S2-10 | 614.2 – 693.8 MHz |
| System: S4-10 | 630 – 693.8 MHz |
| System: U1/5 | 823.2 – 831.8 MHz & 863.2 – 864.8 MHz |
| System: V3-4 | 925.2 – 937.3 MHz |
| System: V5-7 | 941.7 – 951.8 MHz & 953.05 – 956.05 MHz & 956.65 – 959.65 MHz |
| System: X1-6 | 1350.2 – 1398.8 MHz |
| System: X9-18 | 1435.2 – 1524.8 MHz |
| System: Y1-3 | 1785.2 – 1799.8 MHz |
| System: Bluetooth Low Energy (BLE) frequency range | 2402 – 2480 MHz |
| System: Audio frequency response | 20 Hz – 20 kHz (-3 dB) |
| System: Dynamic range | 134 dB |
| System: System latency | 1.9 ms |
| System: Operating temperature | -10 °C – +55 °C (14 °F – 131 °F) |
| System: Relative humidity | 5 – 95 % (non-condensing) |
| EW-DX EM 2 (Rack Receiver): Input voltage | 11 – 13 V DC or PoE IEEE 802.3af Class 0 (CAT5e or higher) |
| EW-DX EM 2 (Rack Receiver): Input current | <= 1 A |
| EW-DX EM 2 (Rack Receiver): Transmit power (radiated) | BLE: max. 10 mW EIRP |
| EW-DX EM 2 (Rack Receiver): Audio output power | 18 dBu max. |
| EW-DX EM 2 (Rack Receiver): Headphone output | 2x 70 mW @ 32 Ω |
| EW-DX EM 2 (Rack Receiver) | Ethernet |
| EW-DX EM 2 (Rack Receiver): Dimensions | 212 x 44 x 189 mm (8.35″ x 1.73″ x 7.44″) |
| EW-DX EM 2 (Rack Receiver): Weight | approx. 1000 g (2.2 lbs) (without antennas and power supply) |
| EW-DX SKM-S (Handheld Transmitter): Input voltage | 2.0 – 4.35 V |
| EW-DX SKM-S (Handheld Transmitter): Input current | < 300 mA |
| EW-DX SKM-S (Handheld Transmitter): Power supply | 2 AA batteries 1.5 V (alkali manganese) or BA 70 rechargeable battery pack |
| Sennheiser part number | 509302 |
| UK band | S1-10 (606 – 694 MHz (UK CH38 and above)) |
