I assume that you're aware, as has been common knowledge for years, that some of the early CDs(rather incredibly)used the same bass cut and treble boost which was applied to LPs to compensate for their weaknesses. The RIAA LP equalization of course applied bass boost and treble cut when LPs were played, to achieve a balanced output. Those CDs when played back without LP equalization naturally were deficient in bass and had excess treble, resulting in a harshness which started the "digital harshness" myth which still hangs on today among those who aren't adequately informed about modern audio technology.
