AMP Technical Specifications: 
Power Requirements: AC Supply: AC100-240V, 60/50Hz, 1A | DC Input: DC12-20V @ 5A 
Total Quiescent Current: Typical 40mA 
Frequency Response: 20Hz to 20KHz(± 3dB) 
Speaker Impedance: 8 ohms - 4 ohms minimum 
Output Power(RMS): 2CH*45W 

Bluetooth Technical Specifications: 
Bluetooth? System: Bluetooth? V4.0 
Frequency Range: 2.40GHz-2.4832GHz(ISM Band) 
RF Channels: 79 Channels for USA, Japan, and Europe (Except France) 
Transmit Power: +8 dBm MAX, Class 1 
Range: Up to 10 Metres 
ID Name: VAST 
Security: 4-Digit PIN Code 

Speaker Technical Specifications: 
Rated Power: 30W 
Rated impedance: 8Ohm 
Frequency Range: 50Hz-20KHz 
Sensitivity: 91 ± 2dB 
Hole Size: 175mm 
Dimension: D215*90mm (Diameter * Thickness) 
Material: ABS 
Speaker Unit: 1"Tweeter, 5.5"Woofer 

Temperature & Humidity: 
Operational Temperature: 32° F -104° F (0° C - 40° C) 
Humidity: 5% - 95% Non-condensing 
Storage Temperature: -4° F - 158° F (-20° C - 70° C)