Have two of these with factory box and foam. EDIT: ONE SOLD ONE LEFTAuditioned them on the bass speakers on my Hawthorne open baffle. Very light 16 ohm load never stressed the amplifiers, in use for only a few months. Lucked into a DEQX DSP so used a standard amp to run the bass drivers. Never mounted these amps, so all factory terminations and no screw marks on the face plate. Power output @ 8 Ohms 150W , @ 4 Ohms 200W
． THD 0.05%
． S/N ratio @ rated power 85dB
． Input sensitivity
@ low level 75 mv/100Hz
@ high level 3.5 v/100Hz
． Input impedance 22 kW
． Variable low pass freq. 50~100 Hz
． Dimension WxHxD 210x290x115 mm
Discrete high current drivers and output devices.
． Woofer level control.
． Low pass frequency adjustable.
． Woofer level control.
． Phase invert switch control.
． Auto on/off control.
． Provide low level in.
． Binding post high level in/out terminal.
． Output protection circuit with relay.
． LED power indicator.
． Master power switch.
． AC 115V/230V factory adjustable.
This amp uses a heavy duty linear power supply, not a switching one. Class AB design with solid bass extension and authority. This is about 3 years old, but I basically held them in reserve. You won't get a better sub amp than these for the money. The replacement models have been cheapened up, and are not as well built. Paypal users please add 3.3% to cover their fees
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