It"s a grading scale of 5
4.5> Audiophile SQ
4.4 Near audiophile SQ
4,3 Above average SQ
4,2 Average SQ(nondistracting)
4.1 Acceptable SQ(distracting)
4. Borderline SQ
3,9< Unacceptable SQ
The most difficult grade is a 4,4. I always grade to a lower end bias, so many graded 4.4 could be audiophile level recordings on your own system.
