Fire and Smoke Safety Protection, High-Quality Amplified Audio, Perfect for Karaoke & Home Theater, Two 1/4" Microphone in for Karaoke, 2 Pairs RCA (L/R) for CD/DVD Player, FM Radio Station Auto-Search Scan, Built-in Bluetooth for Wireless Music Streaming, 40+ ft Wireless Range, Works with Latest Devices Including Smart Phone, iPad, Tablet, iPhone, and Laptop, Hassle-Free Receiver Pairing, Great for Karaoke, Stage Performances, & Crowd Control, Adjusting Treble, Bass, Master & Mic Volume, Digital LCD Display Front Panel Button & Rotary Control Center, Comes with Antenna & Remote Control for Audio Adjustment, USB Flash Drive and SD Memory Card Readers, Desktop Stereo Amplifier, Remote Control, FM Antenna, Construction Material: Aluminum, LCD Screen Size: 2.6''x0.6'', MAX Power Output: 30 Watt (@ 4 Ohm), RMS Power Output: 20 Watt x 2 (@ 8 Ohm), Tone Control: Bass, f=100Hz +/-12dB, Treble, f=10 KHz +/-12dB, T.H.D.: 48dB, Power Supply: 115V/230V, Switchable, Signal to Noise Ratio: >71dB, Frequency Adjustment: +/-2dB, Frequency Response: 20hz-20 kHz, Remote Control Battery: AAA Battery, Not Included, Product Dimensions (L x W x H): 9.8'' x 9.8'' x 3.9'' -inches