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Technical Specifications
Manufacturer: JBL, Inc..
Model Name: JBL Reference 420
Available in: Black
Input Requirement: Main connection – 3.5mm stereo mini jack
Power: 50mW
Sensitivity: 91dB SPL/mW @ 1kHz
Frequency Response: 10Hz – 20kHz (–10 dB)
Dimensions: Diameter – 102mm
Main audio cable – 1.5m
Extension cable – 1m
Weight: 170g (without cord)
Input Impedance: 32 Ohms