Great sound when you find the proper fit Great sound when you find the proper fit, which wasn't on the tips included in the box, but rather from the Model X tips that I saved when my X's case got destroyed. I'm my case those were the dome shaped tips. Great battery life and great band for the buck $$. I've hammering this puppies for over a week now that I can tell that there's s huge difference between them and the Model X. I fell in love with Adv-sound products several years and and I always recommend their products, very competitive in price, great construction and great sound quality. So far I have Model 3 Bluetooth(2017), Lightning(2018) and USB-C(2021) DAC Amps, Model X, Model Y and the Gaming Earbuds.

I dislike having to rate so low I dislike having to rate so low, but I must given utter lack of seal I get from these (size L). The choice to not publish measurements is questionable. I utterly wasted $$ for 3 pairs of tips that give me zero seal. Quality of materials seems fine, but does me no good. I now have oval-shaped ear tips that will sit in a drawer, unused )hopefully I can trade them at some point in the future.

Foam Earbud Tips These foam tips made use of my airpods pro much more enjoyable. My headphones haven't stayed in, and stayed sealed this well since I got them. Just would've hoped to not pay as much as I did for shipping, though I did appreciate that I received them in 2 days!

Custom tips for Z1R Fantastic experience doing business with ADV. I ordered a set of custom tips for Sony IER-Z1R. ADV delivered a perfectly fitting set of tips in far less time than originally estimated, and was also able to deliver 3D scan files of my ear impressions for further use.

Ordered Eartune Fidelity U for my IER… Ordered Eartune Fidelity U for my IER Z1R. Best tips with this IEM after trying lots of eartips. Solved the recessed mids problems with some songs, especially male vocals. Hearing more elusive details too. The only thing making me hesitate to give a 5 stars rating is shipping is so so and expensive.