In my album collection I got quite a number of test CDs with very good recordings for testing one's hifi system.
Among others I found the following albums are worth to mention as there included very detailed instruction as to what you should hear from your speakers:
1. The Ultimate Demonstration Dics by Chesky (available only in normal CD)
2. The Ultimate Demonstration Disc Volume 2 by Chesky (SACD hybrid Disc)
3. A selection from Test-records 1,2&3 by Opus 3 (SACD hybrid disc)
4. Test CD 4 (Depth of image-Timbre-Dynamics) by OPUS 3 (SACD hybrid disc)
Any other good testing CDs that you think are worth purchasing ?