I have three CDS any one of which are very revealing.
I use Sportin Life (all tracks) by Weather Report. This disk was used in the 80's by Leonard Radio (Manhattan NY) to demo all of their equipment at the time. They sold rather high-end and pricey items.
https://en.wikipedia.org/wiki/Sportin%27_Life_(Weather_Report_album)
I also use Denon Audio Technical CD . Not simply the spot frequencies but they have about 10 tracks with sample music that covers the entire gamut of frequency range, dynamic range, imaging subtleties, etc.
http://www.cduniverse.com/search/xx/music/pid/1526639/a/denon+audio+technical+cd.htm
Sony Music Super Audio CD Sampler
http://www.amazon.com/Music-Super-Audio-Sampler-Players/dp/B003UQ4CXC
I use Sportin Life (all tracks) by Weather Report. This disk was used in the 80's by Leonard Radio (Manhattan NY) to demo all of their equipment at the time. They sold rather high-end and pricey items.
https://en.wikipedia.org/wiki/Sportin%27_Life_(Weather_Report_album)
I also use Denon Audio Technical CD . Not simply the spot frequencies but they have about 10 tracks with sample music that covers the entire gamut of frequency range, dynamic range, imaging subtleties, etc.
http://www.cduniverse.com/search/xx/music/pid/1526639/a/denon+audio+technical+cd.htm
Sony Music Super Audio CD Sampler
http://www.amazon.com/Music-Super-Audio-Sampler-Players/dp/B003UQ4CXC