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AC20 Musician Monitors


In stock


Custom fit, cold-pour acrylic delivers amazing fit with dual-driver design.



The AC Series breaks new ground in performance, quality, and value. Handcrafted in the same custom lab alongside the revered Westone Audio ES Series, the AC Series uses balanced armature drivers to accurately reproduce your live performance. The “cold pour” acrylic body with the EPIC replaceable cable is exceptionally comfortable, provides up to 25dB of ambient noise reduction, and is quite stealthy on stage. Recommended for emerging artists and worship teams.

  • Westone Audio Custom-Fit Technology
    Fully custom earpieces are cast, sculpted, and polished by hand from actual impressions of your ears, resulting in the best fit and acoustic seal possible.

  • Balanced Armature
    Westone Audio’s balanced armature driver is significantly more compact and efficient than a traditional dynamic driver. Westone Audio monitors provide enhanced sonic detail and frequency range that extends well beyond typical in-ear solutions.

  • Cold Pour Acrylic
    Earpiece housings are cold-poured in acrylic for a thicker, more resilient acoustic enclosure. Expect increased durability, a more controlled response, and a lustrous appearance from this Westone Audio technology.

  • EPIC Replaceable Cable
    Westone Audio’s robust EPIC cable is constructed of bifurcated, high-flex, ultra-low resistance tinsel wire, reinforced with a special aramid fiber, and braided for ultimate durability, acoustic transparency, and isolation from mechanical cable noise. The MMCX Audio™ connector makes this solution conveniently user replaceable.

  • Handcrafted in the USA
    Meticulously built by a staff of dedicated artisans and lab techs, Westone Audio’s USA products exhibit a level of craftsmanship that truly embodies America’s rich history of handmade artistry.

Additional Information

Click on the “Customize” button above to create your AC Series monitors and find a preferred Westone Audio audiologist who can take your impressions and complete your order.


Sensitivity: 119 dB SPL @ 1 mW


Frequency Response: 20 Hz - 18 kHz


Impedance: 27 ohms @ 1 kHz


Driver: Dual balanced armatures with a passive crossover


Cable: EPIC Replaceable cable


Warranty: 2-year warranty (Warranty Information).

Review and Rating


I use these as my daily drivers. I have had them for going on 5 years now, and they still sound amazing. My primary use is for video and audio editing so I wanted something that would be comfortable and not sweat my ears like my older over the ear sets that this replaced. I wear these about 7 hours a day, 5 days a week going on about 5 years, with no ear fatigue, just watch your volume ;-) . They last.

They have a clean sound with great range and, in my opinion, an impressive low end for a dual driver. If you really need full range low end go with a triple driver or higher. For my needs I absolutely love these.


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