I have had slight "klunks" during warm up [after start from cold] on XA30.5 and XA60.5.
It is due to heat sink expansion with operating temperature rise.
Pass Lab manuals say wait one hour after turn on before playing music.
After one hour warmup there will be no audible creaks or klunks.
Last edited by 6dj8; 11-19-2019 at 02:38 PM.
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