M100MKII is heritage of classic, now, years later, the blend of classical, fusion of fashion, combined with the process of the times, M100MKII is undoubtedly the continuation of the classic, more ways of connections for users to play M100MKII from PC / smartphone / tablet computer's music / video and game sound; M100MKII will become another favorite entertainment tool for audio users. Specifications General Data Model: HiVi M100MKII System Series: Professional Crossover Multimedia Speaker 2.0System Acoustic System System Type: Two-way 4th order vented speaker system Drivers Configuration: 4" woofer?0.8" tweeter Frequency Range: 60Hz-20kHz Sensitivity: 82dB (2.83V/1m) Nominal Impedance: 6? Power Range: 10-60 W Amplifiers System Rated Power: 30W RMS/Channel?60W RMS/Dual Channel Frequency Range: 60Hz-20kHz Input Max: 3000mV Active Crossover Frequency: 2.4kHz Bass Adjust: ±3dB Treble Adjust: ±3dB Signal-to-Noise: >78dB Distortion: THD<0.3% ( 8??1kHz) Input sensitivity: 510mV Input impedance: 32k? Other Parameter Finished: Luxury piano lacquer + Luxury walnut veneer + Black jacquard weave grill Dimension (W×H×D): 7.3"×8.4"×8.5" Net Weight: Main Speaker: 11.5 lbs Vice Speaker: 8.4 lbs.