DBL-Alpha 140 V4 ENC USB NC Headset
Request a DemoThe DBL-Alpha 140 V4 ENC USB NC Headset is one of DESIBEL’s most reliable and time-tested models, widely used in BPOs, call centers, and enterprise environments. Known for its durability and consistent performance, this headset delivers clear voice quality even in high-noise workplaces.
Equipped with an ENC (Environmental Noise Cancellation) microphone and noise-cancelling speaker design, the Alpha 140 V4 ensures focused conversations by minimizing background disturbances during calls.
With USB plug-and-play connectivity, no drivers are required for setup. Its comfortable on-ear design makes it suitable for long working hours, while the rugged build quality supports daily intensive usage.
Warranty Information
DBL-Alpha 140 USB Headset
Warranty: 1 Year
DBL-Alpha 140 USB Headset is covered by 1-year manufacturer warranty from the date of purchase, applicable to manufacturing defects only.
Out-of-Warranty Service:
After the warranty period, paid service & repair support is available.
Spare parts charges will be applicable based on inspection.
QUALITY TESTING
Every DBL-Alpha 140 V4 ENC USB NC Headset undergoes stringent quality testing, including acoustic analysis, microphone noise-cancellation validation, durability testing, and compliance checks.
The product meets international quality and safety standards such as CE, FCC, and RoHS, ensuring safe, reliable, and consistent performance in demanding professional environments.
Conformite Europeenne
Federal Communications Commission
Restriction of Hazardous Substances
Quality Assurance at DESIBEL
Quality Testing
Product Quality
Check Box
Quality Satisfaction
Audit
Before dispatch, each DBL-Alpha 140 V4 ENC USB NC Headset is subjected to strict quality control procedures. Audio clarity, microphone performance, comfort, durability, and packaging standards are thoroughly tested. Our structured audits ensure every headset meets DESIBEL’s professional quality benchmarks.
Key Features & Benefits
Advanced ENC Noise Cancellation
Environmental Noise Cancellation technology minimizes background disturbances, ensuring clear and professional voice transmission even in noisy workspaces.
HD Voice Clarity
Delivers high-definition audio optimized for voice-focused communication, making conversations sound natural and clear.
USB Plug-and-Play
Instant connectivity via USB without drivers. Compatible with Windows and Mac systems.
Lightweight & Ergonomic
Designed for long working hours with soft ear cushions and a balanced, lightweight structure.
UC & Platform Compatible
Works seamlessly with Microsoft Teams, Zoom, Google Meet, Skype, AWS, RingCentral, and other leading communication platforms.
Ideal for Professional Use
Perfect for call centers, BPOs, corporate offices, customer support teams, and work-from-home professionals.
Technical & Specifications
Technical Details
EARPHONE SPEAKER
- Model S307IN32R19
- Impedance 32Ω±15%
- Sensitivity 119±5dB@1KHz
- Resonance freq (Fo) 800HZ±40%
- Frequency respond 20~20KHz
- Maximum input power 20mW
- Dimension(unit:mm) Frequency respond curve
MICROPHONE
- ENC (Environmental Noise Cancellation) Microphone
- Model: F6050UL-B 47
- Integrated product Sensitivity -47±5dB@1KHz 680Ω 1.5V 0dB=1v/pa
- Impedance Max:2.2kΩ@1kHz
- Directivity Uni – Directional
- Frequency 100Hz—16000Hz
- Standard operation voltage 3v
- Dimension: (unit: mm): Schematic: diagram:
Product Specifications
CONNECTIVITY
- Interface: USB (Plug & Play)
- Cable Type: Wired
- Cable Length: Approx. 1.8 – 2.0 meters
- USB Type: USB-A
DESIGN & COMFORT
- Wearing Style: Over-the-head (Binaural / Monaural optional)
- Ear Cushion: Soft Foam / Leatherette
- Headband: Adjustable & Lightweight
- Designed for long working hours
Additional Features
- Plug & Play (No driver required)
- Crystal Clear Voice Quality
- Durable Build for Office Use
- Ideal for Call Centers & Work From Home
- Office Communication
- Customer Support
