"Iain Churches" wrote in message
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SNIP


http://www.kolumbus.fi/iain.churches...Comparison.png


The common practice of leveling has been applied, it is indeed
unpleasent and apparently is the "default" process.
Do a google using these terms:
"Fletcher-Munson curves"
"cd audio leveling"
I've never undertaken pro mastering but my understanding is that
somewhere in the contract or whatever, that it would state "leveling"
would be applied by default unless otherwise/specifically requested.
Have a look at whatever piece of paper you signed for this mastering,
I doubt you'd have legal redress...