Zapco ST4 Amp on a stock bmw e39 amp rack..direct swap.
Stereo, 4 ohms: 4 x 50 Watts @ 14.4V
Stereo, 2 ohms: 4 x 75 Watts @ 14.4V
Bridged, 4 ohms: 2 x 150 Watts @ 14.4V
T.H.D. + Noise: <0.07% @ 4 ohms
retail is $250+
i have only a couple of hours play time on it and the amp was level matched with an oscilloscope.
asking 160 shipped.
![](http://farm7.static.flickr.com/6136/5973026548_d432f4cb11_b.jpg)
![](http://farm7.static.flickr.com/6014/5972469475_ffa49cbc73_b.jpg)
![](http://farm7.static.flickr.com/6029/5973027734_31220e7471_b.jpg)
Stereo, 4 ohms: 4 x 50 Watts @ 14.4V
Stereo, 2 ohms: 4 x 75 Watts @ 14.4V
Bridged, 4 ohms: 2 x 150 Watts @ 14.4V
T.H.D. + Noise: <0.07% @ 4 ohms
retail is $250+
i have only a couple of hours play time on it and the amp was level matched with an oscilloscope.
asking 160 shipped.
![](http://farm7.static.flickr.com/6136/5973026548_d432f4cb11_b.jpg)
![](http://farm7.static.flickr.com/6014/5972469475_ffa49cbc73_b.jpg)
![](http://farm7.static.flickr.com/6029/5973027734_31220e7471_b.jpg)
![](http://farm7.static.flickr.com/6135/5972469639_b347b311c3_b.jpg)