Two Channel Amplifiers:
S302, S402, S502, S702and S1002 Amplifiers
 Two Channel Bridgeable Amplifier
 Heavy Duty Aluminum Alloy Heatsink
 Class 
 Variable Low Pass Crossover Control
 Continuously Variable Input Gain Control
 Gold Plated RCA and Low Level High Impedance Inputs
 Remote Turn On/Turn Off Circuit
 MOSFET Pulse Width Modulated Power Increase
 2 ohm Stable Stereo Operation with Output Power Supply
 Soft 
 Thermal and Speaker Short Protection Circuitry
 LED Power and Protection Indicators
Four Channel Amplifiers:
S664, S804, S1004 and S1204 Amplifiers
 Four Channel Bridgeable Amplifier
 
85 Watts / Channel into Two Channels plus 190 Watts into a third channel 
420 Watts / Channel into Two Channels, or
150 Watts / Channel into Two Channels plus 420 Watts into a third channel 
400 Watts / Channel into Two Channels, or
125 Watts / Channel into Two Channels plus 400 Watts into a third channel 
480 Watts / Channel into Two Channels, or
175 Watts / Channel into Two Channels plus 480 Watts into a third channel
Heavy Duty Aluminum Alloy Heatsink
Class 
Continuously Variable Input Gain Control
Gold Plated RCA and Low Lever High Impedance Inputs
Remote Turn On/Turn Off Circuit
MOSFET Pulse Width Modulated Power Supply
2 ohm Stable Stereo Operation with Output Power Increase
Soft 
Thermal and Speaker Short Protection Circuitry
LED Power and Protection Indicators
4