Ultimate Ears introduces the 18 Pro in-ear custom monitors. Inside each custom earpiece there is the six-speaker system that “delivers the headroom needed for stage use while optimally reproducing the total pro audio frequency range.”
The Ultimate Ears 18 Pro features -26 dB of isolation and passive noise cancellation. It offers 110.6 dB @ 1 kHz Input Sensitivity, 20 Hz to 18,000 Hz Frequency Response, 21ohm impedance. It has a 3.5mm gold-plated connector. The 18 Pro is priced at $1350.