ic4 lost in soundigital 8000.1 evo

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hello friends I speak to you from spain..I do not know if you understand my way of speaking very much I ask you for an apology .. I have a soundigital amplifier 8000.1 evo and I can not see that it is the small 5 pin ic4 .. the previous technician took it and not what put .. thank you very much if someone knew the reference to be able to finish repairing ... I can only find that happy ic .. one of his pin goes through a condenser to pin 1 of the pic .. thank you very much
 
image

this is the image where ic4 frame it with the pincers
 

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I have a Deaf Bonce Apocalypse AAB-7800.1D here on the bench that the board looks just like the area you took a picture of. I was told this amp was made by Soundigital (supposed to be the same amp). The chip is marked BUA if that helps. I will get a close up pick when i get the amp out of the heat sink
 

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