Actually I found the Model Number on Sony.com
Model: XM-604EQX
http://esupport.sony.com/US/perl/model-documents.pl?mdl=XM-604EQX®ion_id=1
50/50 chance with Amps.. could be fried.. but definately looks under powered for subs. Only Bridgeable down to 4 ohms...
• 60 W x 4 Ch at 0.04% THD
• 60 W x 2 + 150 W x1 at 0.1% THD
• 150 W x 2 at 0.1% THD
• RCA and Speaker Level Inputs
• Regulated MOSFET Power Supply
• F&R 5 Band +/-12 dB Adjustable EQ
• 50/200/800/3.2k/12.8 kHz Frequency Centers
• Variable 50-200 Hz Hi-Pass/Lo-Pass Filter
• Recessed Controls w/Level LEDs
• Heavy-Duty Connectors