JBL 1 Series 104

Master and extension speaker sold as one set Coaxial 4.5-inch (118 mm) contoured LF driver with integrated.75-inch (19 mm) soft-dome HF driver Contoured low-frequency port Integrated 60-watt Class D power amplifier; 30 watts distributed to each speaker Acoustically optimized for desktop placement Three sets of inputs allow connection with professional equipment, personal music players and consumer-level devices Master monitor includes electronics for the extension monitor, minimizing wiring and clutter Front-panel volume control Front-panel headphone jack with speaker