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Astell & Kern Billie Jean In-Ear Headphones w/ FREE XB10 - Blue

✓ 2 Year Warranty included

✓ Authorised UK Dealer

✓ FREE Next Working Day Courier Service to mainland UK

Billie Jean is the latest collaboration of In-Ear-Monitors (IEMs) between Astell&Kern and Jerry Harvey Audio which feature a new Dual Balanced Armature (BA) driver system. It is another winning product created by combining the experience and know-how of Jerry Harvey’s IEM design and the quality production of Astell&Kern.


FREE Astell & Kern AK XB10 

Regular Price: £299.00

On Sale Price £249.00

YOU SAVE 17%
Astell & Kern

FREE Delivery to Mainland UK*

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All Next Working Day orders placed before 12pm are dispatched same day (Excludes bank holidays and weekends).

RETURNS
We're pretty sure you'll be happy with your purchase, however for details about our returns policy click here.

 

Product Description

Details

 This One’s for You,

 

 

Billie Jean is the latest collaboration of In-Ear-Monitors (IEMs) between Astell&Kern and Jerry Harvey Audio which feature a new Dual Balanced Armature (BA) driver system. It is another winning product created by combining the experience and know-how of Jerry Harvey’s IEM design and the quality production of Astell&Kern.

Billie Jean brings to life a real audio experience that will take your music to the next level.

Utilizing our experience of producing the award-winning SIREN Series IEMs, which is loved by music enthusiasts around the world, we were able to achieve a new level of accomplishment for those who enjoy a genuine music experience.

Billie Jean features the patented freqphase® technology from Jerry Harvey Audio with a new internal sound bore design to bring clear and impeccably balanced sound from sub-bass to brilliance range. The new IEM shell has been optimized to fit nicely in the ear, utilizes a 2-way 2-BA design, Silver Tinsel cable and L-type plug in a small, compact package. The result is a brilliant pair of IEMs designed and built by Jerry Harvey, the inventor of custom-IEMs, and Astell&Kern, the global leader in Hi-Fi audio. 

Jerry Harvey Audio has developed a whole new Balanced Armature Driver to offer reference quality IEMs for mastering and mixing works. The high-range drivers are designed to deliver everything with minimum distortion, while the ultimate mid driver offers perfect, flat sound from 10Hz to 5kHz.
The bass driver was designed for an even steeper low-pass effect with no distortion.

Most Multiple Driver IEM's suffer from phase and timing issues. Low, Mid, and High drivers all have different impulse times. The higher it is, the faster the impulse time of the BA Driver. The lower it is, the slower the response speed. This causes improper arrival times and Phase shifts.

The "Billie Jean" applies Jerry Harvey Audio's patented "Freqphase" technology, which uses precisely cut tube lengths for each driver to minimize the phase shift of each frequency. This allows for the High, Mid, and Low drivers to be aligned to 1/100ms for the most ideal phase curve. It ensures the correct time alignment and phase of all drivers resulting the most accurate music reproduction in the industry.

 

Billie Jean is over 30% smaller compared to Michelle Limited. Its design has been optimized after a series of studies of different shapes of ear canals from both men and women of different ages. It fits and sits perfectly in your ears without bulkiness.

 

 

The Universal Fit Billie Jean is the perfect companion for Pro Audio applications such as sound monitoring. With the noise isolation design and the IEM know-how from Jerry Harvey Audio, you will get the best fit and comfort while you enjoy your tunes in a new way.

The cable used in the Billie Jean is not common copper. Instead, it is a copper cable plated with silver.
The cable is manufactured by first compressing the silver plated copper wire, which is then flattened and rolled into a steady interval that is then used to wrap around the Kevlar. This newly developed cable has astounding tensile strength and delivers the full dynamic range of music.  There is a 3.5mm Unbalanced cable provided.

Conventional straight cables do not handle the frequent bending of cables and often short out. The intertwined cable disperses the stress to the cable and offers better resilience. It's also easier to wear around the outer ears as the cable shape can be easily adjusted for the best fit.

 

 

The brand name of Aramid fiber that DuPont USA manufactured. It is very lightweight and more durable than nylon, and has the advantage of being very tough. Because it is made of light weight organic polymers such as carbon, nitrogen and hydrogen, allowing it to be 5 times more stronger than steel. Kevlar is particularly strong against friction and is commonly used for body armor and aircraft tires due to its excellent shock absorption.

 

High-quality Bluetooth, AK XB10

We added high sound quality to the wireless freedom!

Now it's possible to use aptX™ HD, the latest Bluetooth codec of Qualcomm to receive 24bit high-quality data wirelessly, and it's designed to faithfully play back the transmitted high-quality data using Astell&Kern's own sound technology.

 

 

Music via Bluetooth without compromise

The AK XB10 delivers a distinctive difference in sound from conventional Bluetooth products. The moment you hear it, you wonder "Does this sound really come from Bluetooth?"

Astell&Kern's outstanding technologies are throughout aptX™ HD to support 24bit/48kHz Bluetooth performance, along with DAC and AMP, essential components of fine audio.

 

Qualcomm® aptX™ HD

While the AK XB10 is a device that wirelessly transmits audio data from smartphones via Bluetooth, it is quite different from conventional Bluetooth devices, in that it supports the aptX™ HD Bluetooth codec.

Just as the display resolutions of televisions evolved from standard to high-definition to 4K ultra-HD for sharper image quality, we are now in the era in which Bluetooth now supports 24-bit audio resolution. 24-bit HD audio that was simply not possible with previous Bluetooth technologies can now be fully enjoyed with aptX™ HD.

Typically used in professional broadcasting, the original aptX™ audio codec is widely used for 16-bit near-CD quality sound. The benefits of the aptX™ codec include superior compression, low computational cost, and low transmission delay.

Launched in early 2016, the next-generation aptX™ HD codec is capable of transmitting up to 24-bit/48 kHz audio that is faithful to the original audio file.

* Devices connected to the AK XB10 must support the aptX™ and aptX™ HD codecs for 24bit audio playback.

 

SBC vs. aptX™ vs. aptX™ HD

 

 

Bluetooth codecs can be easily compared to data packet efficiency. Comparing data packet capacity in a Bluetooth transmission to passengers on a bus, the SBC codec is only capable of seating one passenger per bus. The aptX™ codec can seat three passengers, while the aptX™ HD codec can seat five.

Just like having the ability to fit more people on one bus, the aptX™ HD is far more efficient than other audio codecs.  More information and data can be transmitted if lesser data is lost in a given transmission.

 

 

Perfect Sound

The AK XB10 is equipped with a Hi-Fi DAC capable of reproducing high-quality sound up to 24-bit/192 kHz. Its analog amplifier was tuned using Astell&Kern's own sound technologies to complete the package.

A digital-to-analog converter (DAC) converts digital data into analog signals in a digital media player (DMP). The AK XB10 is equipped with a dedicated DAC for the best digital-to-analog signal conversion that significantly improves Signal-to-Noise Ratio (SNR) and Total Harmonic Distortion (THD).

While a typical analog amplifier simply amplifies and outputs low level audio signals, the Astell&Kern amplifier in the AK XB10 is different.

Rather than simply amplifying the audio signal, the amplifier was designed with a "driving" concept to amplify weak signals and power difficult to drive high impedance headphones. A strong signal is required to drive headphones with a high impedance. The AK XB10’s analog amplifier is more than capable of handling the task.

For example: when comparing the amplifier to a camera, using the zoom function to enlarge small objects in a viewfinder is much like how a common amplifier performs. However, the AK XB10’s amplifier is similar to the way a pan focus function clearly focuses blurry images.

Simply put, the Astell&Kern amplifier focuses on the weak signal.

 

 

Dual Audio Output

"Oh, no! My earphones aren't compatible!"
Have you ever seen a tiny headphone jack where ordinary earphones cannot be plugged?

This is known as a 2.5 mm "sub-mini" audio connector. It's also known as a balanced connector. Modes of transmitting an analog signal can be divided into balanced and unbalanced. An unbalanced connection typically consists of a signal (L + R) and the ground. The ground is supposed to prevent external noise, but noise can still be introduced to the signal and can affect transmitted signals that causes variations and noise in sound.

The balanced connection was developed to reduce ground noise as the signal is transmitted. This connection adds a reverse phase signal (L + R) to an unbalanced signal (L + R) to diminish the noise.

The balanced connection has several advantages compared to an unbalanced connection. The same noise (common-mode noise) that occurs in a signal + reverse-phase signal can be eliminated and output is increased since two separate signals are transmitted.

Thus, it is only natural that we include a 2.5mm jack on the AK XB10 for audio enthusiasts. Enjoy a deeper level of sound through the AK XB10's balanced 2.5mm output.

 

iOS & Android Compatible

The AK XB10 is compatible with all iOS and Android devices.

The AK XB10 supports the SBC, aptX™, and aptX™ HD codecs for Android devices and the AAC codec for iOS.
Forget about device compatibility issues, turn on your smartphone’s Bluetooth, and connect the AK XB10.

You can also connect any laptop/notebook that supports Bluetooth.
You will be transported to a new world of sound the moment the AK XB10 is connected to your smartphone.

 

Handsfree Function

When you receive a call while listening to music with the AK XB10, should you turn off the Bluetooth function before answering?
Should you unplug your earphones from the AK XB10 and connect them to your phone?

NO! Of course not! 
For the ultimate in convenience, the AK XB10 supports voice calls and features a built-in microphone so that you can receive calls when using earphones without a microphone.

Press the button once to receive a call while connected via Bluetooth and press and hold the button to reject a call. Easy peasy.

Features

Specifications

Features

Model: Billie Jean   

Type: Universal fit IEM   

Driver Unit: 2way 2Drivers (High, Full Range(Mid & Low)) / 2BA per side  

Impedance: 18 ohm   

Noise Isolation: -26dB   

Sound Technology: Freqphase™ Time | Phase Waveguide / New Sound Bore  

Components: 3.5mm Unbalanced Cable, 3Sizes of Silicon Ear tips (S,M,L), Carrying Case

 

Astell & Kern AK XB10 

General Specifications

-Model AK XB10
-Body Color Black
-Dimensions 1.97 ”(50 mm) [W] x 1.97 ”(50 mm) [H] x 0.48 ”(12.3 mm) [D]
-Weight 0.81 oz (23 g)
-Bluetooth Version Bluetooth 4.1, Class2
-Bluetooth Profile A2DP (multi), AVRCP, HFP, HSP
-Frequency Band 2.4 - 2.4835 GHz ISM Band
-Range Maximum of 10 meters
-Operating Temperature-10°C ~ 45°C (23°F ~ 113°F)

 

 

 

Audio

-Codec SBC, AAC, aptX™, aptX™ HD
-Port 2.5mm Balanced / 3.5mm Unbalanced
-Output Level 2.5mm Balanced : 1.8Vrms / 3.5mm Unbalanced : 0.9

 

 

   

Battery

-Battery Type 350mAh 3.7V lithium polymer rechargeable battery
-Hours of Operation Approximately 5 hours for music playing and phone calls
-Standby Time Up to 300 hours
-Charging Time Approximately 2 hours
-Charging Method Micro USB 5Pin (charging)

Delivery

Due to the current Covid-19 restrictions - there may be delays of up to 48 hours to our estimated delivery times.


How will you send my item?

We ship to addresses within the UK using Royal Mail and DPD couriers.

How much does delivery cost?

Standard 2-3 working day delivery is FREE on all orders to mainland UK. Next working day courier service is available on all orders for a small fee of £4.99. On some items this is provided for FREE. 

For orders to UK Non-mainland and International destinations, there will be an additional charge at checkout. Please see below for more information.

How long does delivery take?

Depending on the delivery service you choose, delivery usually takes between 1-3 working days to mainland UK from the moment we despatch your order. Orders to UK non-mainland and international destinations can take longer.

When will you despatch my order?

Orders placed before 12pm are processed and despatched the same day (excluding bank holidays and weekends). Orders placed on weekends will be processed and despatched the following working day.

*Please note that international orders may require extra checks before we are able to despatch your order so timescales may vary.

Can I track my delivery?

Yes - Order tracking is offered as standard on all items, whether they are shipped via DPD or Royal Mail. You will receive your tracking information via email once we have despatched your order. 

UK Non-mainland and International destinations.

Shipping for all items to UK Non-Mainland and International destinations will incur a charge at checkout. If a delivery charge is not applied automatically at checkout, we will contact you to arrange payment and reserve the right to cancel your order if you refuse to pay for appropriate delivery. Please feel free to contact us if you would like to query the prices to your destination.

Shipping to international destinations may require further security checks and I.D. may need to be provided by the cardholder.

Please note that we are unable to ship some items outside the UK. To avoid any disapointment please contact us before making you order.

What do you class as UK Non-mainland?

Rep. Ireland, N. Ireland, Channel Islands, Jersey, Guernsey, Isle of Wight, Isle of Man and Scottish Highlands. If you are unsure whether your address is classed as UK Non-mainland please feel free to contact us and an advisor will be happy to help.

For any further enquiries with regards to your delivery please contact us on 020 8813 7666 and one of our adviser's will be happy to help.

Returns


If you're not happy with your item or you've changed your mind.

Even though we're sure you'll be happy with your purchase, it's important that you are aware of how we deal with returns in the event that you need to send something back.

We understand how inconvenient it can be when you buy a product and aren't 100% satisfied with it. For this reason we have designed our returns policy to prevent any further inconvenience to you in these instances.

Under 14 days

  • You can return your goods for a full refund or exchange as long as you inform us of your intention to return the goods within 14 days of receipt, starting from the day after you receive your goods (Exclusions apply, see below.)

  • All return costs are down to the buyer and it is recommended that you return your items using a trackable method with appropriate insurance (if required).

  • Once we have confirmed your return, please ensure that you return the item within 14 days.

  • If a returns number is provided then please ensure that the parcel has this clearly marked.

  • Items need to be returned in "as new" condition in their original packaging. We don't mind if you open the product to check it, however any used or damaged products will be subject to a 25% handling fee so please take care when opening your items. 

After 14 days

  • We will not offer a refund after 14 days of you receiving your delivery unless your product is faulty. 

Exclusions from our returns policy

As we're sure you'll understand, there are some products that we can't offer returns on due to their nature. These include:

  • Special order items and cables cut from a reel (priced per metre). These items will be clearly identifiable.

  • In-Ear headphones due to health and hygiene reasons.

  • Products that include software which require activation.

 Please note that these exclusions do not apply to items that become faulty.

If your product becomes faulty

We endeavour to get your items to you in fully working order, however in the event that your items do become faulty, please read below on what you should do next.

In a lot of cases with some products, faults can be fixed by performing some basic troubleshooting, so to prevent any further inconvenience to you we advise that you contact our Customer Service team who can guide you through some basic troubleshooting before sending items back.

Under 28 days

  • If your items become faulty within 28 days of delivery you are entitled to a full refund or exchange. Please contact our customer service centre who will provide necessary returns details.

  • Please send the items back with a cover note including a description of the fault and your original order number.

  • Once we have fully tested the item and confirmed the fault, we will process the refund or exchange including cost of carriage back to us (within reason).

  • If during our testing we cannot find a fault, no refund will be given and you will be charged for delivery of the item back to you.

After 28 days

  • After 28 days you will still be able to get your faulty items repaired or replaced within the manufacturers warranty and we will be happy to assist you with this. Please contact our customer service team to find out the best way to get your items repaired or replaced. Please be aware that after 28 days we will not cover you for any carriage costs.

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