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    64 Audio A4s Quad Hybrid Drivers Custom IEM Earphones

    • Four hybrid driver custom-fit IEMs with rich enveloping sound
    • Made for audiophiles with exceeding frequency response, detail, and soundstage
    • 1 dynamic low, 1 BA low-mid, 1 BA high-mid, 1 tia high with 4-way crossover
    • Internal modular apex technology eliminates pneumatic pressure
    • LID Linear Impedance Design retains intended frequency response
    • Fully customizable and custom-built from unique ear impressions

    • 64 Audio A4s

      IMPORTANT NOTE ON CUSTOM PRODUCTS
      Custom in-ear monitors are made to order and custom crafted for every individual user making the ordering process different from standard earphones. It only takes a few steps to get your personal custom moulded in-ear monitors made. Click the link to learn more about the Ordering Process, or contact the Hifiheadphones support team.

      64 Audio is proud to introduce our newest four driver custom in-ear monitor, A4s. This complete redesign of their four driver platform is elevated by the Dynamic low frequency driver, making this 64 Audio’s second hybrid custom IEM. Along with that major update, inside A4s is 64 Audio's Tia technology, LID and their patented Apex and 3Dfit tech.

      While this is targeted at musicians looking for a rich enveloping monitoring experience, the frequency response, detail, and soundstage capabilities of A4s exceed other audiophile products at almost any price point.

      Like all 64 Audio Custom IEMs, the A4s monitors are customizable and are hand built from your uniquely shaped ear impressions. They are inherently noise isolating and are designed to work with a wide range of personal audio devices as well as all hard-wired and wireless monitor systems.

      Exceptional rich and enveloping sound.

      Custom Ear Impressions
      A great-fitting pair of custom in-ear monitors begins with a great pair of ear impressions, which are taken by a hearing professional called an audiologist. In the ordering process we will put you in touch with with your nearest UK audiologist to get the process started.

      Custom Design Options
      All 64 Audio custom IEMs are hand-built to order and fully customisable. Bespoke options include faceplate colour and artwork, cable length and colour, Apex modules, storage case customisation, and more - the choices are endless.

      Custom Monitor Ordering Process
      It only takes a few steps to get your personal custom moulded in-ear monitors made. The estimated built time for custom moulds is around 3 weeks after the ear impressions are received by 64 Audio. Get the Ordering Process started for your personal custom in ear monitors.

      tia
      A tubeless design that reduces resonance for a transparent and lifelike sound signature apex - This pneumatically interactive vent relieves air pressure in a sealed ear canal, alleviating listener fatigue and opening the soundstage.

      LID
      Correctional circuit that presents a flat impedance to the amplifier, resulting in a sound devoid of artificial colouration.

      3Dfit
      A new way of manufacturing custom in-ear monitors preserves the details of your ear impressions for the most comfortable-fitting IEMs possible.

      Technical Specifications

      • Transducer Type: Four (4) Dynamic & Balanced Armature
      • Transducer Configuration: 1 dynamic low, 1 BA low-mid, 1 BA high-mid, 1 tia high
      • Bore Configuration: Single
      • Frequency Response: 10Hz - 20kHz
      • Sensitivity: 107dB/mW (94mV) @ 1kHz
      • Impedance: 11Ω @ 1kHz
      • Crossover: Integrated 4-way passive crossover
      • Isolation: 20dB w/ m20 module, -15dB w/ m15 module (Ships with m20 Module standard)

      Features

      • Quad hybrid driver custom-fit IEMs with rich enveloping sound
      • Exceeding frequency response, detail, and wide soundstage
      • 1 dynamic low, 1 BA low-mid, 1 BA high-mid, 1 tia high with 4-way crossover
      • Tia Single Bore eliminates unwanted tube resonance
      • Internal modular apex technology eliminates pneumatic pressure
      • LID Linear Impedance Design retains intended frequency response
      • Hypoallergenic hard acrylic shells
      • Fully customizable and custom-built from unique ear impressions
      • 1.2m or 1.6m detachable professional audio cable
      • Warranty: 2-Year Parts and Labour
      1. ColourBlue
      2. Frequency Response10Hz - 20kHz
      3. Impedance11Ω
      4. Manufacturer Warranty2 Years
      5. Number of drivers4
      6. Part NumberA4s
      7. Sensitivity107dB
      8. Included AccessoriesA4s Custom In-Ear Monitors; 64 Audio Personalized Protective Case; Dehumidifier; Cleaning Tool; Shirt Clip; 1.2m or 1.6m Detachable Professional Cable; m20 apex Modules; Round Sticker; Product Manual
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