Need help in deciding between 2 AV Receivers/Am...

Need help in deciding between 2 AV Receivers/Amplifie!

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Deal Cadet
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eBay Seller:Gowinall sells various imported items. I haven’t decided between 2 amps Sony DH550 or Pioneer VSK329? Also I’d be requiring Voltage Step Down/Converter to work those amps in India!!
Any/All suggestions are welcome. Thanks a bunch!!