http://www.arcaudio.com/arc-05/reviews/xxk_2500.htm Reviews
270x2 @4 ohms, 525x2 @2 ohms, & 1,050x1 @4 ohms bridged
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Highly efficent 4 layer PCB
Uniquely designed high efficent power transformer
Rated 500 amp power supply switching FET
Rated 250 amp per channel output devices
Variable speed fan control for quiet operation
Power save mode for low level playing time with engine off
Protection against: reverse voltage, over voltage, speaker short, and thermal overload
Heavy duty construction
PDF
http://www.arcaudio.com/arc-05/pdf/xxk_amp.pdf
Output power :
270x2@4 ohms, 525x2@2 ohms, and 1,050x1
4 ohms bridged
Transient distortion :
Frequency response:
20Hz-20Khz
S/N ratio(A wtg) :
> 105dB
Bass boost :
+ 18dB @45Hz
Input sensitivity :
250mV - 2.5V
Crossover :
12dB/24dB stereo 55Hz-5.5KHz
Fuse :
30A x3
Dimensions :
18" x 8" x 2.35"
+18 Db bb at 45 hz, 135 amp max current draw, Damping factor is ridiculous >2000!!