Rated 4.9 (130 reviews)
Evolution Wireless Digital (EW-D) is Sennheiser’s entry digital UHF platform, using a 56 MHz tuning range, equidistant frequency grid and 134 dB transmitter dynamic range for gain-structure-free operation. The Smart Assist app handles setup over Bluetooth Low Energy. This set ships with the SKM-S handheld transmitter (capsule sold separately), rack receiver, PSU and rackmount hardware. Band variant: S1-7, 606.2 – 662 MHz (includes UK CH38; above 614 MHz needs a coordinated licence). Requires an Ofcom shared PMSE licence in the UK.
Key Features
Digital UHF transmission with equidistant frequency grid for dense multi-channel use
56 MHz switching bandwidth, up to 90 channels per environment
134 dB transmitter input dynamic range removes the need for gain-structure matching
Smart Assist mobile app handles scan, sync and parameter setup over Bluetooth Low Energy
Half-rack metal receiver with detachable BNC antennas and balanced XLR plus 6.3 mm jack outputs
Runs on two AA cells or the optional BA 70 Li-ion pack
UK band S1-7: 606.2 – 662 MHz (includes UK CH38; above 614 MHz needs a coordinated licence)
RF output: Audio link: 10 mW ERP (Range Y1-3: 12 mW ERP); BLE: max. 10 mW EIRP
Occupied bandwidth: 200 kHz
Audio frequency response: 20 Hz – 20 kHz (-3 dB) @ 3 dBfs
Specifications
| System | Audio link frequency ranges |
| System: S1-7 | 606.2 – 662.0 MHz |
| System: Bluetooth Low Energy (BLE) frequency range | 2402 – 2480 MHz |
| System: Audio frequency response | 20 Hz – 20 kHz (-3 dB) @ 3 dBfs |
| System: Audio THD | <= -60 dB for 1 kHz @ -3 dBfs input level |
| System: Operating temperature | -10 °C – +55 °C (14 °F – 131 °F) |
| System: Relative humidity | 5 – 95 % (non-condensing) |
| EW-D EM (Rack Receiver): Input voltage | 11 – 13 V DC |
| EW-D EM (Rack Receiver): Input current | <= 300 mA |
| EW-D EM (Rack Receiver): Transmit power (radiated) | BLE: max. 10 mW EIRP |
| EW-D EM (Rack Receiver): Audio output power | 18 dBu max. |
| EW-D EM (Rack Receiver): Dimensions | 212 x 44 x 189 mm |
| EW-D EM (Rack Receiver): Weight approx. | 1000 g (without antennas and power supply) |
| EW-D SKM-S (Handheld Transmitter): Input voltage | 2.0 – 4.35 V |
| EW-D SKM-S (Handheld Transmitter): Input current | < 300 mA |
| EW-D SKM-S (Handheld Transmitter): Power supply | 2 AA batteries 1.5 V (alkali manganese) or BA 70 rechargeable battery pack |
| EW-D SKM-S (Handheld Transmitter): Occupied bandwidth | 200 kHz |
| EW-D SKM-S (Handheld Transmitter): Transmit power (radiated) | Audio link: 10 mW ERP (Range Y1-3: 12 mW ERP); BLE: max. 10 mW EIRP |
| EW-D SKM-S (Handheld Transmitter) | Dimensions (Ø x l) |
| EW-D SKM-S (Handheld Transmitter): Dimensions (Ø x l) | 50 x 268 mm (incl. MMD 835 microphone module); 40 x 200 mm (without microphone module) |
| EW-D SKM-S (Handheld Transmitter): Weight approx. | 304 g (incl. MMD 835 microphone module); 195 g (without microphone module); without batteries |
| EW-D SKM-S (Handheld Transmitter): Range | Up to 100 m in optimal conditions (no obstacles) |
| Set in packaging: Dimensions | 405 x 350 x 73 mm |
| Set in packaging: Weight | 2.8 kg |
| Sennheiser part number | 508763 |
| System: Latency | 1.9 ms |
| EW-D EM (Rack Receiver): Diversity | Switching diversity |
| EW-D EM (Rack Receiver): Audio outputs | 1 x balanced XLR-3M (+18 dBu max.); 1 x unbalanced 6.3 mm jack (+12 dBu max.) |
| EW-D EM (Rack Receiver): Antenna inputs | 2 x BNC, 50 ohm |
| EW-D EM (Rack Receiver): Power | 12 V DC jack, from the supplied power supply unit or a Sennheiser EW-D ASA antenna splitter |
| Compatible microphone modules | MMD 835-1, MMD 845-1, MME 865-1, MMD 935-1, MMD 945-1, MMK 965-1, MMD 42-1, Neumann KK 204, Neumann KK 205, MM 435, MM 445, ME 9002, ME 9004, ME 9005 |
| In the box | EW-D EM rack receiver, EW-D SKM-S handheld transmitter, MZQ 1 microphone clip, 2 rod antennas, power supply with country adapters, rackmount kit, 4 rubber feet, quick start guide, safety instructions, manufacturer's declaration |
| UK band | S1-7 (606.2 – 662 MHz (UK CH38)) |
