The 64 Audio A4s is your gateway to auditory bliss. Four groundbreaking drivers and a slew of cutting-edge 64 Audio technologies like Apex, tia, and LID combine to guarantee extraordinary fidelity for a sound experience you'll never forget.
Everything you need is included with the 64Audio A4s IEMs!
The A4s custom IEM features 64Audio's patented 3Dfit technology for guaranteed fit and comfort.
3Dfit is a revolutionary process that ensures your ear molds are reproduced with astonishing accuracy while integrating acoustical tuning features in the IEM shell for sound precision and comfort you just won't get with any other custom IEM.
The A4s is only the second custom in-ear monitor in 64Audio's stable to feature a dynamic driver hybrid setup. Paired with 64Audio's patented tia system, the A4s delivers a complete high-quality sound experience that's perfect for both professional audio work or casual listening.
It is well-known that a dynamic driver delivers some of the most natural and visceral sounding low-end of any driver type. With a special dynamic driver driving the A4s' bass, you'll experience deep rumbles like never before and feel a powerful punch in your favorite music.
On the other hand, 64Audio's tia open drivers and open bore design deliver outstanding clarity and immaculate details for a truly immersive sound experience like no other.
IEMs can cause discomfort over time, caused by unavoidable pressure buildup typical of the air-tight seal created by in-ear monitors to ensure proper sound delivery.
You'll never have to worry about discomfort with the A4s. The glove-like fit created by the ultra-accurate 3Dfit shells is enhanced by 64Audio's revolutionary air-pressure release system called Apex.
Apex vents extra air from the sealed ear canal to ensure you don't suffer from discomfort caused by pressure buildup over time. The result is unbeatable comfort for distraction-free extended listening sessions and a more natural and immersive soundstage.
Your audio source affects the sound quality of your in-ear monitors due to varying electrical resistances in multi-driver in-ear monitors.
With Linear Impedance Design, you'll never have to worry about inconsistent sound quality on the A4s.
LID ensures the dynamic driver and Balanced Armatures in the A4s remain faithful to the original sound signature so you can experience only the purest sound - no matter your source. Whether you're using your smartphone, bodypack, DAC/Amp, or DAP, rest assured you'll hear every note with precision and accuracy on the 64Audio A4s.
A3t:
Drivers: 3 Drivers
Impedance: 11Ω @ 1kHz
Frequency Response: 20Hz – 20kHz
Sensitivity: 109 dB/mW @ 1kHz (105mV)
A4s:
Drivers: 4 Drivers
Impedance: 11Ω Nominal
Frequency Response: 10Hz – 20kHz
Sensitivity: 107 dB/mW @ 1kHz @ 1mW (94mV)
Our Analysis:
The A4s is a premium custom IEM from 64Audio. Priced at $1,099, the A4s delivers a fantastic low-end response for listening to bass-heavy music.
Specification | Description |
Driver Type/Count: | 1 dynamic low, 1 BA low-mid, 1 BA high-mid, 1 tia high |
Frequency Response: | 10Hz – 20kHz |
Sensitivity: | 107 dB/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 |
Shipping is FREE on all orders to customers within the USA.
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While we fully stand by every product that we sell, we understand that sometimes you might change your mind or realize the product you ordered wasn't exactly what you were hoping for.
Here's a quick rundown of our return policy.
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Ordering Process:
At HiFiSoundGear, we understand that the journey to perfect audio is unique for every individual. We also understand that the custom IEM ordering process can be confusing at times. That's why our custom IEM ordering process is designed to be as seamless and supportive as possible.
Here's how we do it:
1) Choose your custom IEM model, add to cart, and proceed through checkout. This authorizes payment for the base IEM, and gets the ordering process started.
2) We'll reach out with an order confirmation and send you a form with instructions on choosing your custom options. You can fill out the form yourself, or contact us by phone or email. We're happy to fill in the options for you - just let us know what you're looking for!
3) If you've chosen any options that have an extra cost associated with them, we'll handle it at this point of the process with an invoice. (Custom artwork, wood faceplates, etc.)
4) We'll find a few audiologists in your area and work on helping you get an appointment set for your impressions! All you need to do is show up. We'll provide you with a special guide and instructions for your audiologist.
5) Send us pictures of your impressions so that we can verify whether they can be used for production. This prevents the headache of shipping your impressions only to find that they are not detailed enough.
6) We'll send you a shipping label and a confirmation sheet for your impressions, marked and addressed to the right place. We'll even ship you a box if you need it!
7) We'll confirm that your impressions have been received, and that the production of your custom IEMs has begun! Expect to wait 4-6 weeks for production and final shipment.
As always, we're available to help at any point of the process. Just reach out by phone at (888) 926-8024 or by e-mail at info@hifisoundgear.com.
Returns
Refunds, returns, and exchanges are NOT available for custom IEMs after your order has been submitted and production has started, due to the highly custom nature of the product.