I took just a quick look at what the "Challenge" was, and saw that it was a dynamic range of 8dB or more. This is an appalling commentary on the status of modern pop music, that such a range would be a "challenge". Assuming that this refers to the range between the quietest music level(not the noise floor during an instant of silence, if such indeed exists)and the loudest, I have some classical CDs where that number is a bit better than 50dB.

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Enjoy the music, not the equipment.