Evolution Wireless G4 IEM is Sennheiser’s analogue UHF in-ear monitoring platform, with 42 MHz switching bandwidth, HDX compander, and an adaptive-diversity bodypack receiver. This set ships as a complete in-ear monitoring system with rack-mount transmitter, bodypack receiver, earphones and accessories. Band variant: GB, 606 – 630 MHz (UK CH38). Requires an Ofcom shared PMSE licence in the UK.
UK Frequency & Licensing
GB band operates in 606 – 630 MHz (UK channel 38), available under an Ofcom Shared PMSE licence. Other EW G4 IEM band variants exist (A, AS, G, B, C, D, E) for users holding coordinated PMSE licences in different sub-bands — contact us if you need a different variant.
Key Features
✓Analogue UHF in-ear monitoring system
✓1680 selectable UHF frequencies across a 42 MHz tuning range
✓HDX compander for low noise floor on in-ear feeds
✓Auto-scan on the transmitter with one-button sync to the bodypack receiver
✓Adaptive-diversity bodypack receiver with backlit display and focus/stereo modes
✓UK band GB: 606 – 630 MHz (UK CH38)
✓Switching bandwidth up to 42 MHz
✓Audio frequency response 25 Hz – 15 kHz
Specifications
| RF carrier range | 606 – 630 MHz (UK CH38, GB band) |
| Switching bandwidth | up to 42 MHz |
| Modulation | Wideband FM stereo (MPX pilot tone) |
| Nominal / peak deviation | ±24 kHz / ±48 kHz |
| MPX pilot tone | 19 kHz / ±5 kHz |
| Frequency stability | ±10 ppm |
| RF output power (standard) | typ. 30 mW |
| RF output power (high) | typ. 50 mW |
| Antenna output | BNC socket, 50 Ω |
| Compander system | Sennheiser HDX |
| AF frequency response | 25 Hz – 15 kHz |
| AF inputs | 2× XLR-3 / ¼” (6.3 mm) combo, electronically balanced |
| Max. input level | +22 dBu |
| AF loop output | ¼” (6.3 mm) stereo jack, balanced |
| Total harmonic distortion (THD) | < 0.9 % |
| Signal-to-noise ratio | > 90 dB |
| Power supply | 12 V DC |
| Current consumption | max. 350 mA |
| Operating temperature | −10 °C to +55 °C |
| Sennheiser part number | 509908 |
