Headphone/ Mic Comparison

A4tech HS-24, A4tech A4-HSP-100U
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A4tech HS-24

A4tech A4-HSP-100U

 Acoustic design    
 Active noise reduction No No   
 Earpiece design    
 Noise reduction (microphone)    
 Number of drivers    
 Release year    
 Power supply
 Operated by battery    
 Battery life    
 Number of batteries for operation    
 Type of battery    
 Driver size    
 Available colours Black   
 Decoder unit    
 Including 3.5 mm / 6.3 mm adapter    
 Type of connector    
 Cord length 6.5 feet   
 Detachable cable    
 Maximum range    
 Wireless connection technology    
 Audio features
 Frequency range 20 Hz-20 kHz   
 Frequency response (microphone)    
 Impedance 32 Ohm   
 Impedance (microphone)    
 Sensitivity 97Db/10Mw/3mm   
 Sensitivity (Microphone)    
 Product page    
Warranty 0
Price 950-Rs 1,820-Rs