S2 Smart Noise Reduction Voice Recorder: Acoustic DSP dynamic noise reduction processing
For students capturing lectures or professionals documenting meetings, the S2 Voice Recorder transforms spoken words into clear digital files. While most recorders focus on basic audio capture, this device offers intelligent noise reduction that isolates voices from background chatter—perfect for noisy classrooms or bustling offices.
The DSP dynamic noise reduction module filters out ambient sounds so you hear every word distinctly. Connect directly to your Android phone via OTG to manage files effortlessly. With 24-hour recording time and support for TF cards up to 128GB, it handles long sessions without interruption. Record in WAV or MP3 formats at various bit rates to balance quality and file size.
Features
- Direct connection to Android phones via OTG
- Supports TF card up to 128GB
- Recording time up to 24 hours
- Supports WAV and MP3 formats
- Suitable for meetings and interviews
- Acoustic DSP dynamic noise reduction processing
General specs
- Model: S2
- Seller: Sunsky
- ID: 4126486
- Material: ABS
- Connectivity: USB Type-C
- Charging Port: USB Type-C
- Charging Time: 2h
- Recording Time: 24h
- Noise Reduction: DSP
- OS Compatibility: Android
- Playback Formats: WAV, MP3
- Storage Capacity: 64GB
- Expandable Memory: microSD
- Recording Bitrate: 32kbps, 128kbps, 512kbps, 1024kbps, 1536kbps
- Recording Formats: WAV, MP3
- Max Expandable Memory: 128GB
- First listed by seller: 1/7/26
If you are interested in more details, you can find full information on the seller's page.
Shipping options
United States
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| Brand | TIMMKOO | Boyuevi | Fivegren | Generic | ||
| Model | S2 | SR1 | A3 | M7 | 64GB | FW920D |
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| Price | $15.77 | $65.99 | $24.99 | $139.99 | $36.99 | $79.00 |
| Seller | Sunsky | Amazon | Amazon | Amazon | Amazon | Amazon |
| Update | Jan 31, 2026 | Feb 7, 2026 | Feb 7, 2026 | Feb 7, 2026 | Feb 7, 2026 | Feb 2, 2026 |
| Connectivity | USB Type-C | App Control | WLAN, Bluetooth, USB | Bluetooth 5.0 | ||
| Recording Time | 24h | 380 to 2200 hours | 500 | |||
| Noise Reduction | DSP | Advanced algorithms | AI, DSP | |||
| Storage Capacity | 64GB | 136GB | 64GB | 64GB | 64GB | |
| Width | 1.4 Inches | 2.2 inches | 2.09 inches | |||
| Height | 4.4 Inches | 3.38 inches | 3.39 inches | |||
| Length | 0.6 Inches | 0.13 inches | 0.12 inches | |||
| Weight | 0.46076612758 pounds | 0.26014546916 pounds | 63.5 | 0.07054792384 Pounds | ||
| Battery Life | 30 hours continuous recording | 15 hours | 35 hours | |||
| NumberOfItems | 1 | 1 | 99999 | |||
