• Producer:  Edifier (a famous Chinese brand)
• Made in China, high quality ,very popular in China 
• The S5.1M is a "Mini" version of the existing S5.1 system, Edifier's top of the line Hi-End product. Based on many of the engineering principles used on the S5.1, the S5.1M retains very similar performance by only reducing the size of subwoofer and satellite enclosures. The satellites are a 2 way design embodying the highest quality drivers for superb clarity and definition. Designed by Edifier's Sound Engineering Team for the serious enthusiast, the S5.1M will deliver all the stunning realism and impact to the sound of movies, music, and video games alike.
  

Specifications:

• Power Output:
• Satellite Speaker: RMS 20Wx6(@ fo=1kHz, 10% THD, 6 channels loaded )
• Woofer: RMS 60W (@ fo=60Hz, 10% THD, single channel loaded )
• THD+N (Amplifier): <=0.5% (satellite, @ PO=3W )
• Signal-to-Noise Rate (Amplifier): >=85dB(A Weighted)
• Input Impedance: 10K Ohms
• Frequency Response: 33-20k Hz
• Input Port: 6.1 channels RCA Line-in
• Control: Infrared remote controller for main volume, rear, center, subwoofer, mute and power.
• Woofer unit Impedance: 4 Ohms
• Woofer driver unit: 8 inch(D210mm), magnetically shielded
• Satellite Speaker unit Impedance: 8 Ohms
• Satellite driver unit: 3 inch (D90mm) paper cone, magnetically shielded;3/4 inch cloth dome tweeter, magnetically shielded
  Dimensions:
• Subwoofer: 240(W) x 403(H) x 338(D)mm
• Satellites: 105(W) x 192(H) x 100(D)mm
• Gross Weight: Approx 22Kg
  Power Requirement:
• 220V-240V ~ , 50/60Hz (for Model European/China/Korea/South America, etc.);
• 100V-120V ~, 50/60Hz (for Model USA/Canada/Japan );
• MX Power Consumption: 180W

Features:

• All MDF wood enclosures, including the satellites.
• Magnetically shielded drivers, no need to worry about the screen nearby.
• 8 inch Long-Throw super woofer with 60W RMS high power output amplifier.
• 3 inch mid-range driver and 3/4 inch cloth dome tweeter in every satellite.
• Micro-Computer controlled, digital volume IC.
• VFD wide displayer, Infrared remote controller and front panel key controls.
• Volume fade-in and fade-out when power is switched on or off.
• Flash memory to save the adjusted system value.
• High-power drive, with high-current Toroidal ring transformer.
• 6.1 channel inputs, Dolby Digital (AC-3) ready, DTS ready, can be updated to EX6.1 system.