64 Audio
Vancouver, Washington, United States · founded 2010
64 Audio is one of the most influential independent boutique IEM makers in the world, founded and still led by Vitaliy Belonozhko. It matters because it invented and patented several IEM technologies (apex pressure relief, tia tubeless open-BA drivers, LID) that reshaped high-end in-ear design, and its U12t is a long-standing reference benchmark in the audiophile community — exactly the kind of source-cited, technically substantive boutique brand the wedge is built on.
64 Audio is a high-end American manufacturer of in-ear monitors (IEMs), making both custom (CIEM) and universal-fit models for professional musicians, audio engineers, and audiophiles. The company was founded in 2010 as “1964 Ears” in Portland, Oregon by sound engineer Vitaliy Belonozhko (with his wife Anastasia), and rebranded to “64 Audio” on September 1, 2015; it later relocated across the Columbia River to Vancouver, Washington. It is best known for pioneering proprietary IEM technologies including apex (a pneumatic pressure-relief venting system), tia (Tubeless In-Ear Architecture, using openly radiating balanced-armature drivers), and LID (Linear Impedance Design).
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At a glance
- Type
- Manufacturer
- Founder
- Vitaliy Belonozhko (with his wife Anastasia)
- Founded
- 2010
- Headquarters
- Vancouver, Washington, United States
- Price range
- Premium
- Makes / sells
- in-ear monitors (IEMs), custom in-ear monitors (CIEMs), universal-fit IEMs, gaming audio, IEM accessories
- Known for
- balanced armature, hybrid driver IEMs, tia (Tubeless In-Ear Architecture) open balanced-armature drivers, apex pneumatic pressure-relief venting, LID (Linear Impedance Design), custom and universal IEMs
- Website
- www.64audio.com
Notable products
- U12t — 12-driver flagship universal IEM widely regarded as a reference standard; approx. $1,999 (a 2025 revision exists)
- U4s — 4-driver universal IEM, ~$1,100, the most affordable universal in the lineup; a 'fun'-leaning tuning derived from the A4s custom
- Fourte — flagship hybrid universal IEM (tia quad-driver hybrid), a summit-fi statement model
- Nio — warmer-tuned universal IEM
Sources: 64 Audio - Official About page · 64 Audio - From 1964 Ears to 64 Audio: A Company Timeline (official blog) · 64 Audio - Announces A-Series and U-Series Earphones (name change, Sept 1 2015, Portland OR) · HiFi Headphones - Brand Story: 64 Audio (founded 2010, rebranded 2015) · 64 Audio - Introducing the apex & tia Technologies (official blog) · 64 Audio - tia technology page · Yelp - 64 Audio, 4510 NE 68th Dr, Vancouver, Washington · Headphones.com - 64 Audio U4s Review (pricing/positioning) · Audio46 - 64 Audio U12t (2025 Revision) Review (pricing/positioning)