What is the best pair of Ultimate Ears for Bass Players? Follow The UE 11 PRO provides a strong tight low end. It has an active subwoofer that is only in use when needed. the UE11 PRO is perfect for Bass Players. Learn more here. Related articles Where can I purchase Ultimate Ears custom in-ear monitors? I'm a bass player. Should I use the 11s or the 18s? Everyday Fit (UE CSX) vs. Pro Fit (UE Pro) 30-day Money Back Guarantee Returns Ultimate Ears Pro In-ear Monitors I need a refit. Can a local audiologist make the adjustments? Would that affect my warranty?