DBL-Alpha 140 USB NC Headset
Request a DemoThe DBL-Alpha 140 USB NC Headset is a time-tested and reliable communication headset, widely trusted by BPOs and call centers for consistent performance and durability.
Designed with Noise Cancellation (NC) microphone technology, it effectively reduces ambient background noise, ensuring clear and uninterrupted voice communication.
Built for long working hours, the Alpha 140 offers a comfortable ergonomic fit, robust construction, and stable USB plug-and-play connectivity, making it ideal for high-volume calling environments.




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:
Paid service & repair support is available after the warranty period.
Spare parts charges will be applicable based on inspection.
QUALITY TESTING
Every DBL-Alpha 140 USB 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
Before dispatch, each DDBL-Alpha 140 USB 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
Noise Cancellation Microphone
Reduces ambient background noise for clear and uninterrupted voice pickup during calls.
USB Plug-and-Play Connectivity
Easy setup with Windows and Mac systems. No drivers required.
Optimized for Voice Communication
Clear and stable audio output designed for call center and telecalling usage.
Comfort for Long Working Hours
Lightweight ergonomic design suitable for extended daily operations.
Durable & Time-Tested Design
Built for continuous daily use in demanding BPO and office environments.
Ideal for Professional Teams
Suitable for BPOs, call centers, corporate offices, 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
- 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