Ears don’t lie, but do have limitations:
1) you can’t hear something unless you buy it or go hear it somewhere else first
2) If you hear it somewhere else first, you are hearing an entire setup, not just the thing you are interested in hearing. So your ears won’t lie and you know what the thing of interest is capable of sounding like but not what it will sound like back home.
3) Once you buy if you don’t like what you hear then you are back where you started in the first place.
So best to use all information available to help deal with the limitations your ears alone are handed. That helps assure a happy ending sooner and probably avoids wasted funds.
Or just keep trying until....