Pretty much this. Add in a collection of maybe 20 CDs that sound stunning due to hifi being totally tuned to those particular disks.
I got a laugh out of this.
And it reminded me of an experience I had in a stereo store. The owner was demoing an amp/speaker combo that was _very_ expensive. I was not enjoying it, as it was making the CD I was listening to sound _very_ bad (Bob Marley & The Wailers). The owner said "But you really should hear it on female vocals. Let me go get some." At that point I cut the demo short. I don't have anything against female vocals -- in fact I had several CDs with me that featured female vocals. But I do have something against systems that do only one thing well.
Also, I had a feeling that when the guy demoing the equipment said "female vocals" he meant "Diana Krall, Patricia Barber, and their many imitators." He would probably not have included the Patti Smith CD I had brought along.