@Sonic Defender, I've just looked at your signature, now I finally understand why you and I agreed on some facts, at the same time different experience on XM3.
I'm using Samsung S9+ as my main listening source, could have lead to our differences. If I would EQ S9+ 250hz at -4dB, 125hz at -3dB and 63hz at -2dB, then most of my audiophile recordings CD bass sounded like a 5" woofer tight articulate bass, which makes Double Bass will sound a bit like a Cello.
Think I would agreed with you, XM3 bass does bloom a bit at bass, but it certainly does not sounded like some claimed it was Bass-Head tuned, which I strongly disagree such statement.
With Samsung S9+, I'm quite happy with 250hz at -2dB, 125hz at -1dB and 63hz at -2dB, for audiophiles recordings CD. For modern pop CD's, bass need further EQ to -6dB or even -8dB.
BTW, I've just ordered Pat Metheny Day Trip CD from overseas since none of Singapore CD stores carrying it anymore. I should have it by next week