What amplifier do you think is better?

guyj45

New member
Sony 4-Channel 600-Watt Xplod Amplifier, XMZR604R

http://www.walmart.com/catalog/product.do?product_id=9907092

or

Dual 4-channel car amplifier xpa4640

http://www.crutchfield.com/S-Ujath5tfsT1/p_070XPA4640/Dual-XPA4640.html
 
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