I personally have not had a lot of joy with them, the folks at ACS have been very helpful, initially got the 17’s, couldn’t hear my bass, changed them for 15’s, same problem, changed again for 10’s being sure these would definitely do the job, can only just hear my bass but not enough to feel comfortable playing live.
I had a free hearing test when I had the earplugs moulded and there is no issue with my hearing.