| EK 100 G4 | 
| Frequency range | A1: 470 - 516 MHz A: 516 - 558 MHz
 AS: 520 - 558 MHz
 GB: 606 - 648 MHz
 G: 566 - 608 MHz
 B: 626 - 668 MHz
 C: 734 - 776 MHz
 D: 780 - 822 MHz
 E: 823 - 865 MHz
 JB: 806 - 810 MHz
 K+: 925 - 937,5 MHz
 | 
| Dimensions | Approx. 82 x 64 x 24 mm | 
| Compander | Sennheiser HDX | 
| THD, total harmonic distortion | ≤ 0.9 % | 
| Weight | (incl. batteries) approx. 160 g | 
| Audio output | 3.5 mm jack socket: +12 dBu (mono, unbalanced) | 
| Signal-to-noise ratio | ≥ 110 dBA | 
| Switching bandwidth | up to 42 MHz | 
| Peak deviation | ±48 kHz | 
| Nominal deviation | ±24 kHz | 
| RF sensitivity | < 1.6 μV for 52 dBA eff S/N | 
| Squelch | low: 5 dBµV, middle: 15 dBµV, high: 25 dBμV | 
| Temperature Range | -10 °C to +55 °C | 
| SK 100 G4 | 
| Dimensions | Approx. 82 x 64 x 24 mm | 
| Compander | Sennheiser HDX | 
| THD, total harmonic distortion | ≤ 0.9 % | 
| Weight | (incl. batteries) approx. 160 g | 
| Signal-to-noise ratio | ≥ 110 dBA | 
| RF output power | Max. 30 mW | 
| Switching bandwidth | up to 42 MHz | 
| Peak deviation | ±48 kHz | 
| Nominal deviation | ±24 kHz | 
| Operating time | Typically 8 h | 
| Power supply | 2 AA batteries, 1.5 V or BA 2015 accupack | 
| AF frequency response | Mic: 80 – 18,000 Hz Line: 25 – 18,000 Hz | 
| Temperature Range | -10 °C to +55 °C | 
| SKP 100 G4 | 
| Dimensions | Approx. 105 x 43 x 43 mm | 
| Compander | Sennheiser HDX | 
| THD, total harmonic distortion | ≤ 0.9 % | 
| Weight | (incl. batteries) approx. 195 g | 
| Signal-to-noise ratio | ≥ 110 dBA | 
| RF output power | Max. 30 mW | 
| Switching bandwidth | up to 42 MHz | 
| Peak deviation | ±48 kHz | 
| Nominal deviation | ±24 kHz | 
| Operating time | Typically 8 h | 
| Modulation | Wideband FM | 
| AF frequency response | 80 – 18,000 Hz | 
| Temperature Range | -10 °C to +55 °C | 
| Frequency stability | ≤ ±15 ppm | 
| ME 2 | 
| Connector | 3.5 mm jack | 
| Frequency response | 50 to 18,000 Hz | 
| Max. sound pressure level | 130 dB | 
| Cable length | approx. 1.60 m | 
| Transducer principle | pre-polarized condensor microphone | 
| Pick-up pattern | omni-directional | 
| Sensitivity in free field, no load (1kHz) | 20 mV/Pa | 
| Equivalent noise level | 36 dB |