Choosing a tuner for your system is of little difference from choosing other components. When auditioning other components, people are primarily concerned with their sound quality, not their technical performance.
For example, if a preamplifier under audition sounds good, you do not need to worry much about its technical performance. Because .if it sounds good, then it is working well.
Tuners, on the other hand, exhibit great variability in their technical performance. It will not only concern the tuners sound; tonal balance, sound staging, portrayal of timbre, etc., but also basic characteristics such as the ability to pick up weak or distant stations, reject adjacent stations, provide a noise-free audio signal, and stay tuned to a station without drifting.
A tuners performance in these areas can be accurately characterized by measurement; this makes tuner specifications much more significant than those of other audio components.
There is a direct correlation between a tuners specifications and its sonic performance. You still have to listen to the tuner before you buy, but you can often separate poor performing models from better units by...