Sundown audio SIA-3500D Smart (SIA Series) Amplifier

Sundown audio SIA-3500D Smart (SIA Series) Amplifier   Sundown Audio SIA 3500.1D is Sundown Audio's latest and greatest intelligent full bridge amplifier, the sundown SIA 3500 is power supply is built stronger, heatsink is heavier, and the SIA 3500 features intelligent low voltage technology protecting the amplifier from typical full bridge malfunction.     Specifications NUMBER OF CHANNELS : 1 CH MAX OUTPUT POWER : 14.4VDC - 1 OHM :3500W RMS  MAX OUTPUT POWER : 14.4VDC - 2 OHM :3000W RMS MAX OUTPUT POWER : 14.4VDC - 4 OHM :1750W RMS  INPUT SENSITIVITY : 200MV SIGNAL TO NOISE RATIO 108 DB  FREQUENCY RESPONSE: 10HZ 20KHZ (-3DB)  CROSSOVER :  HPF: 10 TO 1KHZ (-12DB/8) VARIABLE LPF: 40HZ TO 20KHZ (-12DB/8) VARIABLE  BASS BOOST : 0 TO 12DB (50HZ)  THERMAL MANAGMENT ; SMART COOLER ( FAN POWERED BY TEMPERATURE OR AUDIO, WITH 3 SPEEDS)  INPUT IMPEDANCE: 56K OHMS PROTECTION SYSTEM ; OUTPUT SHORT / HIGH /LOW SUPPLY VOLTAGE / THERMAL PROTECTION  MINIMUM SUPPLY VOLTAGE : 9VDC MAXIUM SUPPLY VOL