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how do I increase output gain at the speaker by 3 to 6 dB with minimal additional noise

Question asked by toy-knowlogy on Mar 7, 2017
Latest reply on Mar 20, 2017 by KJBob

simple project but I need additional volume at the speaker output of 3 to 6 dB.  when I add gain to the amp I get considerably more noise out the speaker.  Any suggestions?ADAU1761.  Any suggestions 1761