TDA1540 or TDA1543

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Guys,

I have a 1543 with passive I/U right now. It gives me tons of exaggerated bass which I like. If I switch to 1540 with OPA627 opamps, will there be less exaggerated bass ? The 1540 doesn't give out a lot of voltage out so I'll have to fit in an opamp.

Thanks.
 
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