Direct Audio From Power Supply Specifications

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Direct Audio From Power Supply, 300 watts 120/240vac

 US Patent 598,6498

Power Rating:    300watt RMS 
Standby input Power     10-12w
Rated THD:       less than 0.3%, typical  0.2% at 50hz
Power Bandwidth :  20Hz to 200Hz (limited by LP filter)
Signal to Noise Ratio:     greater than 100db, Unweighted
Input Impedance:   10,000 Ohms
Input Sensitivity:     0.5mv RMS L&R input driven
Gain   32db
Level Control   Potentiometer 
Variable LP filter 2nd Order 50-150hz
Hum noise   Better than 2mv RMS
Damping Factor:   Better than 150
Subsonic Filter:   30Hz 2nd Order (fixed)
Low Pass Filter:    100Hz 4TH Order (fixed)
Control Level    Potentiometer from 0 to .5v
Inputs:  RCA line inputs L&R
Speaker Inputs  8v RMS
Speaker Input Impedance     4.7k
Topology:   Power Output Class-DAFPS
Power Supply:   Switching Power Supply operated at 30khz (DAFPS)
Auto turn on/off   On /Off 3 mV sensitivity
Bicolor LED indicator  Red = Standby, Green = Power On
Auto Off Switch   2 positions switch
Efficiency      75%
Size:    5.5” by 9.8” by 3.6” Deep
Heat sink   Aluminum Plate 5.5” by 9.8” 0.100 Thickness
Weight :       1½ Pound 
Short Circuit protection   400w Shut down Led extinguished
Offset protection    +/-1.5vdc
Temperature shutdown  85 ° C, 75 ° C Recovery
Fast Acting Compressor     2%  THD Clipping detector
Soft clipping circuitry    Rounded Clipping
120v/230v Operation   Jumper to select 120v or 230v

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