MGT SS27 MKII — Stereo Stethoscope
MGT SS27 MKII is a compact analogue stereo stethoscope designed for discreet listen-through-walls monitoring in challenging environments. The MKII revision focuses on clarity, low distortion and a practical control approach to support quick, field-ready operation.
Through-wall monitoring can involve unpredictable variables (surface coupling, wall materials, electrical interference and wide level variations). For this reason, the SS27 MKII integrates compression and noise-gate functions to help stabilise listening conditions and reduce the need for continuous manual adjustment. Detailed configuration and operating settings are provided via confidential datasheet.
- Very high sensitivity and low distortion for intelligible audio.
- Compact and robust construction with straightforward operation.
- Analogue design with adjustable compression and noise-gate functions.
- Dual-channel workflow: listen and/or record one or two channels (stereo/mono modes depend on configuration).
- High-pass filtering to reduce very-low-frequency rumble and line-frequency noise.
- Rechargeable lithium battery with USB-C charging (5 V sources).
System overview
- Low-noise amplification inside the microphones, followed by strong high-pass filtering.
- Response optimised primarily for the human voice energy range (approx. 200–4500 Hz).
- Dynamic control stage providing compression and noise-gate action before the headphone/line amplifier.
Confidential datasheet
Configuration details, operating procedures and switch settings are supplied to qualified customers on request. Please contact us for the SS27 MKII datasheet and lead time.
Frequency response (overview)
The SS27 MKII incorporates internal high-pass filtering and response shaping designed to prioritise speech intelligibility during through-wall monitoring.
Rather than maintaining a flat studio-style curve, the analogue signal path is optimised to reduce low-frequency structural rumble and electrical interference, while enhancing the vocal presence region where conversational clarity is most critical.
The combination of low-noise amplification, dynamic compression and noise-gate control contributes to a stable and intelligible listening experience across varying surface materials and environmental conditions.
Product gallery
Procurement, compliance & support
Supply is restricted to qualified government, defence and law-enforcement customers or accredited partners. End-use and export controls apply; local regulations must be observed. Confidential datasheets and integration guidance are available on request.