64 Audio U18s

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Audiophile Reference In-Ear Monitor

  • With 18 drivers and completely sound reedless design
  • 8 Balanced Armature woofers and 8 BA midrange drivers together with a BA midrange tweeter and the tia BA tweeter in a compact enclosure
  • Slightly warmer sound signature and lower sensitivity to achieve higher volume levels and meet the needs of stage and studio professionals
  • With 64 Audio's exclusive LID (Linear Impedance Design) technology
  • Modular Apex technology reduces air pressure in the ear canal for a premium, fatigue-free sound experience
  • Construction: Closed
  • Frequency response: 10 - 20000 Hz
  • Sensitivity: 111 dB/mW @ 1 kHz
  • Impedance: 10 Ohm @ 1 kHz
  • Crossover: Integrated 4-way passive crossover
  • Isolation: -20dB and -15dB by supplied Apex modules
  • Cable: 1.2 m (detachable) with angled 3.5 mm mini jack
  • Incl. transport hard case, TrueFidelity foam earpieces (S,M,L), silicone earpieces (S,M,L), m20 Apex module and m15 Apex module
Number of Ways 4
Custom Made No
Removable Cable Yes
Ambience No
Bass Boost No
Midrange Boost No
HiFi Yes
Allround Yes
Application Allround
available since September 2021
Item number 527576
sales unit 1 piece(s)
Cable Length 120
Impedance 10 Ohms
Sensitivity 111 dB
Usable with Otoplastic No
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$2,766
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In-ear monitoring at reference level

64 Audio’s ultimate reference-level custom-fit in-ear monitor, the A18s, is also available in a universal-fit version. The IEM, known as the U18s, features a multiple system with a remarkable 18 balanced-armature drivers, which offer a three-dimensional, high-resolution sound at reference level thanks to the proprietary tia technology and the associated single-bore design. As the integrated Apex technology allows a fatigue-free sound experience and adjustable ambience isolation and LID ensures reliable sound consistency, the U18s meets the high expectations of musicians, vocalists, and audiophiles. It comes with a great variety of TrueFidelity foam and silicone earpieces, each in sizes S, M, and L, a detachable premium-grade cable with a 3.5 mm mini-jack connector, two Apex modules (m20 and m15), and a carrying case.

Ultimate sound experience

The U18s delivers a sound at the level of reference studio monitors. An extremely accurate bass reproduction, a high-resolution midrange, and transparent treble frequencies are combined with a clean tonal depth and a precise stereo panorama performance. This is achieved by the 18 BA drivers installed in each side, eight of which are responsible for the bass and midrange reproduction and one each for the high-midrange and treble reproduction, and also by the tia system, which merges the sound from the bass and midrange drivers in a large opening (single bore) and significantly reduces distortions and resonances. An integrated passive frequency crossover divides the audio signal to supply the four paths. In addition, LID (linear impedance design) ensures a consistent sound from all signal sources.

The listener’s choice

Using pneumatic-interactive ventilation, the modular Apex (Air Pressure Exchange) technology ensures fatigue-free listening by reducing the pressure on the eardrum caused by the sealing of the ear canal. The insulation level can also be adjusted by changing the modules embedded in the casing. For example, those who want to be closer to the live audience can go for the m15 module (-15 dB), while those who prefer a higher level of ambient insulation can choose the m20 module (-20 dB). With the U18s, professional musicians, vocalists, and all other discerning users get an in-ear monitor whose ambience isolation can be adjusted to suit the place of action and their own personal needs.

About 64 Audio

64 Audio is a US company from Vancouver, Washington, consisting of around 70 employees and founded by Vitaliy Belonozhko, which has developed into a globally respected manufacturer of premium-quality in-ear monitoring systems. With future-oriented innovations such as tia, apex, and LID, the premium in-ear monitors included in the range outperform traditional technologies. In addition to the universal "off the shelf" in-ear monitors with foam and silicone ear tips in different sizes, 64 Audio also offers custom-made in-ear monitors, for which a new, digital process called 3D-Fit is used instead of the conventional moulding process. Many famous show stars already rely on the IEM systems from 64 Audio.

Reference level wherever you need it

The special construction of the U18s results in a sound reproduction of unsurpassed quality, which sets new standards for in-ear monitors in terms of resolution, transparency, dynamics, and attention to detail. Every beautiful detail and even fine dynamics are superbly reproduced, while at the same time exposing even the smallest flaws in a poor mix. This makes the U18s not only an excellent in-ear monitor for musicians on stage, but also a high-quality tool for production environments and the right choice for discerning music lovers. The over-ear cable design, the ergonomically designed casing, and the extensive selection of different earpieces also guarantee that the in-ears fit securely and are comfortable to wear even for hours on end.

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