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Thread Starter 
Guys, I'm looking to replace my old Panny XR-57 with amps based on these Texas Instrument chips:

TAS5631B
TAS5614A
TAS5612A

These are supposed to be the ultra noise "high definition" new chips from TI that replace all those old ones. Any cheap amp based on any of these would do. Please let me know if you come across any! Thanks!