From the March 18, 2017 Edition of Sound & Vision
“All in all, when it comes to in-ear headphones, it’s hard to do better than the UE 18 + Pro. Warm, authentic sounding, with detail where it counts, audio fans who don’t want to compromise while on the go (or on stage) will find these Ultimate Ears worth the investment.”
The low frequencies sound really wonderful. Not bloated, boosted, or overstated, there’s a unbroken, fluid transition from 300 Hz all the way down to the bottom of hearing range. If you’re a fan of the Dr. Chesky Headphone Demo Disk, you’ll love how the 18+ Pro perform on the “Shake, Rattle, and Roll Test” (a low frequency sweep down to 20 hZ.) There’s no one frequency range that suddenly pops up due to poor tuning; everything sounds flat and even.