Samson EarAmp EWM100 (Bank K) - Stereo In-Ear Wireless Monitoring System for Stage and Broadcast

Samson EarAmp EWM100 (Bank K) - Stereo In-Ear Wireless Monitoring System for Stage and Broadcast

The Samson EarAmp EWM100 is a stereo in-ear monitor (IEM) system that delivers a clear, stable UHF signal with a range of up to 100 m line-of-sight. In K-band (470–502 MHz), it combines the ET100 half-rack transmitter —with balanced XLR/jack combo inputs and loop-through outputs for daisy-chaining systems and headphone monitors —with the compact, easy-to-operate ER100 bodypack receiver . The ER100 features stereo/mono mode , “more of me” L/R balance , high shelving EQ , limiter , and gain adjustment from its high-contrast display. Infrared (IR) sync and auto-scan make setup quick, while the 10-group × 18-channel architecture and user presets make it easy to work with multiple artists. The pack includes Zi150 earphones with foam and silicone ear tips in three sizes for sealing and isolation.

Main features

• K band (470–502 MHz) in UHF with scanning from transmitter or receiver and IR sync to link the system quickly.
• ER100 with stereo/mono , L/R balance , treble EQ , limiter (−6/−12/−18 dB), volume boost and legible on-stage display ; 3.5 mm output .
• ET100 half rack (1/2 U): 2 balanced XLR/Jack combo inputs , 2 balanced jack outputs (loop) , headphone output , front/rear BNC antenna and rack mounting kit.
• Up to 100m range (line of sight) and stereo FM MPX transmission with PLL for stability.
• Simultaneous output to multiple receivers from a single ET100 for rehearsals and live performances with multiple performers.
• Includes Zi150 : 32 Ω in-ear earphones with foam and silicone ear-tips (3 sizes of each type).

Product benefits

• Customizable in-ear mixes : L/R balance and mono/stereo mode to easily build a “more of me.”
• Fast and reliable setup : auto-scan, presets, team/user names and IR synchronization reduce changeover times.
• Clear Stage : Replaces floor monitors, reduces feedback and improves intelligibility.
• Scalability : 10 groups × 18 channels per group, plus user presets (5 groups with up to 10 configurable channels each) for touring and productions.
• Stable Audio : FM MPX modulation with ±50 kHz deviation, 90 dB typical dynamic range and <0.5% THD+N .

Use cases

• Bands and solo artists : IEM monitors with their own mix for live performances and rehearsals.
• Theater and broadcast : sound continuity and level control on stage and on set.
• Houses of Worship / Events : Multiple receivers with a transmitter for choirs, presenters, and musicians.

Frequently Asked Questions

• Can I use multiple receivers with one transmitter? Yes. One ET100 can power multiple ER100s on the same frequency.
• Does it work in stereo? Yes. The ER100 supports stereo and mono , with balance control.
• What's its battery life? With two AA batteries, the ER100 offers up to 8 hours of typical battery life (real-life conditions and battery type may vary from 6 to 8 hours ).
• What is the K-band RF range? 470–502 MHz (check local regulations before operating).

Description for projects

UHF IEM system in Bank K 470–502 MHz , 10 groups × 18 channels ; 5 user groups with up to 10 configurable channels each. Modulation FM MPX stereo (PLL), deviation ±50 kHz, MPX 19 kHz, stability ±0.005 % (0–50 °C), range 100 m LOS. System response 38 Hz–15 kHz (+0/−3 dB, 32 Ω), THD+N <0.5 % (1 kHz, −6 dBu), dynamic range 90 dB (typ.). ET100 : RF power 10 mW, balanced 2×XLR/Jack combo inputs, balanced 2×Jack (loop) + 1/4'' monitor outputs, power supply 15 V DC/0.8 A, consumption 160 mA, 214 × 200 × 44 mm, 961 g. ER100 : 2×AA, consumption 150 mA, typical battery life 8 h, 3.5 mm output, 102 × 65 × 23 mm, 95 g. Zi150 32 Ω headphones with foam and silicone ear-tip sets.