This is an interesting question. I do have a couple. Itzak Pearlman and Oscar Peterson together on TELARC - its a great recording with two very difficult instruments to reproduce well - viol and piano; Duke Ellington's Duke's Big Four to see how tight those knick drums get reproduced; usually something large and orchestral like a beethoven symphony to see if the system has good large work clarity; and finally something like Art Pepper +11 to kind of roll all those things in together.
CD's you bring for auditioning
Do you also have some CD's which you use to audition equipment and which will reveal immediately shortcomings, eg I use
Buddy Guy - Sweet Tea (first couple of tracks can be unbelievable hard to listen to on some equipment
Pink Floyd - DSOTM, checkout the bass, the clocks can sound 'washed' up on some over-tubed systems
Pink Floyd - The Wall , played at loud volume will immediately reveal shortcomings on loudspeakers
and yours...
Buddy Guy - Sweet Tea (first couple of tracks can be unbelievable hard to listen to on some equipment
Pink Floyd - DSOTM, checkout the bass, the clocks can sound 'washed' up on some over-tubed systems
Pink Floyd - The Wall , played at loud volume will immediately reveal shortcomings on loudspeakers
and yours...