The specs on that amp (if it is purple with a switch on the bottom for high current high pwoer) is 1000 watts and 1 ohm stable. 2 channel amp. I could be wrong but they used to sell them at sears I know that the model that matches it is the 754 and it is 75X4 RMS so I am guessing that is 500X2? Like I said just trying to help but not 100% on this.
I found the info on your amp. I was wrong but here are the stats. I found all of this on eBay by the way so you can just look for the amps model number to see it. Hope this helps. Later
~justin
Sony Xplod XM 1002HX Specs Retail: $280 All measurements @ 14 volts unless otherwise specified. Frequency Response (4-ohm IHF Load 20 Hz to 20 kHz, 1 kHz Ref.): +0.4 dB, –.1 dB L/R channel error Max deviation 20 Hz to 20 kHz: 0.1 dB Phase Response (4-ohm IHF Load 20 Hz to 20 kHz, 1 kHz Ref.): +14 degrees, –7 degrees Signal-to-Noise Ratio (Below Rated Output, “A” weighted): –121.4 dB Distortion at Rated Output @ 1 kHz: 0.1% @ 280 wattsx1 Output Power (resistive) minimum output 20 Hz to 20 kHz @ 1%THD+N (all channels driven into 4 ohms): 111 watts x 2 @ 14 volts,.91 watts x 2 @ 12.8 volts, 59 watts x 2 @ 10.5 volts Output Power (resistive) minimum output 20 Hz to 20 kHz @ 1%THD+N (all channels driven into 2 ohms): 147 watts x 2 @ 14 volts, 121 watts x 2 @ 12.8 volts, 80 watts x 2 @ 10.5 volts Output Power (resistive) minimum output 20 Hz to 20 kHz @ 1%THD+N all channels driven into 1 ohm: 104 watts x 2 @ 14 volts, 86 watts x 2 @ 12.8 volts, 56 watts x 2 @ 10.5 volts Output Power (4-ohm IHF Reactive Load @ 60 Hz, to clipping): 331 watts Output Power (2-ohm IHF Reactive Load @ 60 Hz, to clipping): 238 watts Crosstalk (Referenced to Rated Output, 20 Hz to 20 kHz): -55.7 dB Damping Factor @ 100 Hz, 2 ohms: 54 Voltage for Rated Output: 96 mV to 4.3 volts Idle Current Draw: 1 amp Current Draw @ 1/3 Maximum Power: 24.6 amps @ 105 watts Efficiency @ 1/3 Maximum Power: 30% Power-Up Noise: 19.4 dB SPL Power-Down Noise: 4.9 dB SPL