Description
Enjoy a ground-breaking performance with the 64Audio U4s. This hybrid quad-driver IEM features the same patented audio technologies like tia and Apex Core developed for flagships at an irresistible price point.
Created For You
Experience a light and engaging sound with impressive sub-bass without compromising mid-bass clarity with the 64Audio U4s. Its balanced mid frequencies and pleasant high-mid band perform well with various music genres and recording styles, without causing listener fatigue. The tia high-drive r's airy quality and the extended sound-stage from the Apex Core technology provide a lifelike and immersive listening experience.
Tuned For You
The 64Audio U4s achieves a powerful, deep, and enveloping sound without sacrificing clarity, thanks to its dynamic driver. Its frequency response follows proven targets for fidelity and preference, avoiding muddiness and excessive mid-bass. The mids are revealing and contribute to its wide stereo imaging, while the high frequencies strike a balance between neutrality and detail, offering the perfect blend of presence and body.
Beautiful Blue
The 64Audio U4s features a Slate Blue shell with a unique faceplate inspired by Muonionalusta meteorite fragments. The colour was influenced by beautiful blue-dial timepieces and the illuminant properties of the shell and faceplate give it a distinct look in different lighting conditions.
Listen with the Best
The U4s boasts an ergonomic anodised aluminium shell that contains a single dynamic driver, two balanced-armature drivers and one patented tia driver. Its four-way crossover is further enhanced by the proprietary electronic low-pass filter, reducing low-frequency distortion. The ultra-low impedance premium silver-plated copper cable guarantees uninterrupted signal transmission.
Put a Lid on It
The different source amplifier output impedances of smartphones, DAC/Amps, Hi-Res Audio Players and more, can cause the frequency response to varying across devices based on the increase in resistance. A patented Linear Impedance Design (LID) circuit corrects the non-linear electrical resistance of the multiple drivers sets to restore proper interaction with the source device. It preserves the desired sound signature while staying constant and reliable.
Enjoy Your Music with tia
The U4s’ patented Tubeless In-Ear Audio (tia) system reduces unwanted resonance and distortion for a transparent and lifelike sound. This is achieved by allowing the Dynamic Driver and tia Balanced Armature Drivers to radiate freely in the single large tia bore with no obstructions in front of the drivers. It features special acoustic chambers instead of tubes that constrict the sound of the drivers.
No Dampers, It’s Electrifying!
Old technologies like acoustic dampers merely blocked frequencies from reaching the ear instead of preventing it from reaching the drivers. This introduced distortion due to the vibration and air movement at higher volumes. The 64Audio U4s uses the same electrical low pass filter, developed for the outstanding U18s, which reduces distortion while eliminating unwanted target frequencies before they reach the driver.
Apex Core Technology Looks as Good as it Sounds
The Air Pressure Exchange (Apex) Core allows a seamless airflow to the solid anodised aluminium shell that uses a perforated grill on the elegant faceplate to prevent the obstruction of air for effortless reproduction of music and minimal physical fatigue. This patented vent releases air pressure for better comfort and lesser fatigue while enhancing noise isolation. This technology comes in four module variations: mX, m12, m15 and m20.
Know Your Modules
- mX: Provides wide imaging with reduced noise isolation and a decreased sub-bass response. Perfect with recordings that have more spatial information and less sub-bass content. The reduction (by 1db-10db at 350Hz-20Hz) in the sub-bass response creates a slight emphasis on the high-frequency band.
- m12: Developed to address concerns from users who found the bass drop between m15 and mX to be too significant by reducing bass by 1dB-4dB at 130Hz-20Hz. Ideal for tracks where the bass is slightly overpowering other frequencies and can provide increased mid-range punch.
- m15: Enhances the audio staging by creating a natural and less localised sound. It also provides a better panning blend, resulting in a more cohesive and immersive listening experience and an accurate target frequency response curve.
- m20: Increases sub-bass response while keeping the mid-bass clean, making it ideal for bright mixes and modern pop music. While the sound-stage width is reduced, it works well for synth-heavy tracks and unlocks missing sub-information in older rock recordings.
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Let customers speak for us
This is a great little nifty adapter for iPhone users, its connectors are high quality and fit snug without any wobble, it’s a well made product. The quality of output is fantastic, I am using it with Truthear Gate IEMs in iPhone 14 Pro Max and it doesn’t heat up at all. The 90 degree design works well for normal day to day use without hampering the usage of the phone. Tried them with Apple’s EarPods too and works like a charm.
Best part is that it supports the microphone and the buttons on the cable, which is difficult to find on quality Lighting DACs. Easily switch between music and calls.
The parcel came in quickly and well packaged, thanks to the Audio Store.
This is a fantastic IEM at this price for beginners like myself, extremely clear and detailed sounding pair. Super comfortable with the right eartips from the provided options in the box.
Additionally, I must say that the cable is quite amazing with a clear and high quality microphone.
They came in super quick well packaged, thanks to the Audio Store.
This is the first IEM I ever bought,Quality and delivery are all excellent, thank you very much
Love this beast IEM
This was recommended to me by Mr Pritam last year but I went ahead with a Hype 4 as it was cheaper. I recently got a chance to listen to this and it blew me away. I purchased it a week later as it was on my mind. It has a nice thick sound signature with ample bass. Its also real smooth to listen to and I ended up listening to it for 2 hours without skipping any track. It just makes you want to listen to music. Its ultra light weight and comfortable. The stock tips are also great and help with comfort and bass. The IEM was a bit unstable with the default cable and I changed it to an Ares S copper cable. It also requires a bit of power to sound its best. I had no issues listening to it on my phone with a cayin ru7, ifi go blu and Hiby R4. Highly recommended for EDM and bass heavy tracks.
Moral of the story - Dont ignore Pritam's recommendations.
This IEM has a great energetic sound signature. It was slightly on the spicy side in the beginning but an upgrade to a copper cable and tip rolling made it perfect. The shell is slightly on the larger side so I'm having to adjust it once in a while. The shells are super light though. It comes with 3 different types of tips but I found a perfect fit with symphonium tips. The stock cable is decent but the lack of ear hook guides made it unstable for me. I moved to a copper cable which helped in getting better bass and reducing the treble spikes. Its really easy to drive and efficient with most sources and doesn't need a lot of power to sound its best.
Best product from AUDIOCULAR to carry all my expensive audio devices in one compact sized carrying case.
Its perfectly designed to keep DAP, DAC & IEMs in one single case. Looks small but comes with adequate space to arrange all required devices in an easy way.
Its have 3 individual compartments divided by two racks placed inside which are easily removable or usable if required.
Case's inside Material is soo soft that we can feel with touch, so with that all our audio devices will be very safe and scratch free.
At initial when I saw the price, thought like bit expensive but after getting that in hands and using it got a feel like its worthy at that price.
See my attached picture for your reference.
Thanks to TheAudioStore for making this case available.
Regards
Surya.
Those IEMs have most crisp sound in such a low price.. also very durable. Cable and connecting pins are also durable too. Best for enjoying old bollywood songs. I’m happy with this.
It is best earphones in budget
This is my first IEM, still I am very much satisfied with the sound quality. Meets my expectations. A little bit Eq tweaking would bring you best listening experience. Overall good product, build quality is good.
The only thing I wish could have been better is the wire quality.
A lot of space for your iem and others stuff like DAC, tips etc. and the best stuff is it soft and well padded from inside.. I loved it
I've been running my Kiwi Ears Quintets directly from my MacBook, and looking for a DAC to improve. Saw good reviews about the Onix Xl1, and ordered from TAS as soon as it was available. The DAC is a solid to hold and looks well made. Bit larger than others, but it's mostly for use with my laptop, so no issues for me. Switched my IEM's to 4.4 balanced, and the sound is great, with a distinct improvement from running it off the Mac 3.5 earlier. With my limited judgement I would say it adds a bit of warmth to the bass, and also tames a bit of the higher end for the Quintets. I find in high gain mode, the imaging and separation seem to get a slight boost, but maybe that's just me. Very happy with my purchase and would totally recommend!
I personally would recommend these for anyone who wants a balanced a sound with thumping base it’s simply awesome
These are the best ear tips that I've ever experienced! I've bought the ML size, and they fit perfectly in the conchas of my ears. The velvety smooth finish of the tips is sublime to the touch and feels super soft when put inside the ears.
The sound impression of these tips caught me unawares! They startled me! This is the first time I felt that a pair of excellent ear tips can make an IEM sound better. Much better, in fact. It makes the sound holographic and well-rounded; both the width and the height increase significantly; I had to turn the volume a couple of notches down in every music source I use: DAP, desktop, laptop, mobile phone, or tab with a DAC, etc. Most of the IEMs I used with these ear tips sounded superb in low volumes. They didn't distort sound on high volumes as well.
I used them with FiiO FD5, Final Audio A5000, Meze Alba, Dunu Titan S, Shure Aonic 215, and Pixel Buds. (In the case of the Pixel Buds, I could not close the case after putting these on; so I guess a smaller size is needed.) It's too bad I couldn't use them with Westone Audio Mach30 because of improper fit.
Versus the Dunu S&S: The Dunu S&S has similar characteristics. But the Velvet has a much more impactful sound. It has a thicker note weight that enhances the natural timbre of both male and female vocals and most instruments. The Velvet also has a much bigger soundstage than that created by the S&S. Contrarily, the S&S has more accurate imaging than the Velvet.
Versus the Symbio W (Silicone with foam inside): The Symbio W makes sound more intimate than the Velvet. It has a smaller soundstage than the Velvet and hence it is less holographic than Velvet. But it is more transparent than Velvet with light note weight; so I prefer to listen to singers like Tracy Chapman or P!nk with these ear tips on.
I must say that the shape of the Velvet ear tips is exquisite! Add to that the perfect choice of materials and finish and you have a winning combination. (Please see the pictures of the top and bottom of the three ear tips in the photo I've uploaded.) At almost INR500 a pair, these are the best ear tips among all the ear tips that I've ever tested! I'll surely get more of them in the future. I highly recommend them to everyone!
I carry the following items in my office bag.
1. Fiio BTR7
2. Fiio BTR7‘s type-C to type-C cable
3. Fiio BTR7‘s type-C to lightning cable
4. A 4.4mm (F) to 3.5mm (M) converter
5. Hifiman RE400
6. Type-C to 3.5mm dongle
7. Lightning to 3.5mm dongle
See the attached pictures. Earlier, I used to carry these 7 items in 2 separate cases. With this case coming in at just Rs. 250/-, I have now perfectly fit all these 7 items into one case. It’s made my life easier as i no longer have to carry and pack-unpack two separate cases each time.
I also love the fact that this case fits the Fiio BTR7 like a glove.
For me, this case has the perfect length, breadth, and more importantly width.
The case’s in-hand feel is also very good and it’s zip is super smooth.
200% recommended.