In this photo from Instagram, Andrew Rayel shows his custom made earplugs from ACS. The image shows that these are PRO class, though it's hard to tell which exact model these are. It depends on the filters used, and all filters are interchangeable (so Andrew can use different filters for his needs). He says: "Finally my custom made earplugs arrived!"more
I bought a set of Pro 17's as i work as a sound engineer, they provide an even level reduction across all frequencies and hence do not colour the sound you're hearing, this is a massive advantage to anyone who takes the quality of their sound seriously and i can't recommend this product enough.