MGT Note-33 — Covert Digital Audio Recorder
MGT Note-33 is a compact covert digital stereo audio recorder designed for dependable evidence capture and straightforward media handling. Recordings are stored on a removable MicroSD card for fast offload, while a headphone output supports immediate audio evaluation.
The unit is housed in a durable aluminium enclosure that combines portability with field-ready robustness. Configuration and time/date updates can be performed via a Windows utility, and optional AES-256 encryption is available for file protection (subject to configuration).
- Digital stereo audio recording with removable MicroSD storage.
- Headphone monitoring output for quick playback and verification.
- Single-button operation with multiple triggering options (timer / voice / remote).
- Rugged aluminium housing; compact footprint for integration and concealment.
- AES-256 encryption available (optional; subject to configuration).
- Charging via Micro USB; internal Li-ion battery.
Highlights
- Designed to support reliable operation while keeping workflow simple and media removable.
- MicroSD connector engineered to help reduce dust ingress and support longevity.
- LEMO connectors available for high-reliability microphone inputs (per configuration).
Technical overview
Recorder
| Dimensions | 53 × 40 × 14 mm |
|---|---|
| Internal battery | Li-ion 3.7 V / 400 mAh |
| Recording time (battery) | Up to 20 hours (typ.). Time varies with sampling rate (e.g., 16 / 32 / 48 kHz). |
| Recording capacity (32 GB) | Approx. 120 hours (typ.). Note: media capacity can exceed battery duration. |
| Microphone input | Differential input impedance 10 Ω |
| Headphone output | Stereo 32 Ω (using CTL-44-P adaptor where required) |
| External power (charging) | Micro USB |
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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, integration guidance and training are available on request.