Astell&Kern XIO Earphones
✓ 1 Year Warranty included
✓ Authorised UK Dealer
The Astell&Kern XIO is a premium in-ear monitor developed in collaboration with 64 Audio, combining advanced driver technology with carefully engineered construction. Its 10-driver hybrid design and four-way crossover bring together deep bass, natural midrange and detailed treble, while tia technology helps deliver clear, spacious high frequencies. Finished in black DLC-coated 904L stainless steel and supplied with a 4.4mm balanced cable, XIO is built for listeners who want to get more from their high-quality music collection.
Advanced Hybrid Driver Technology
XIO uses ten drivers in each earpiece, combining two dynamic drivers for low frequencies with eight balanced armature drivers handling the midrange and treble. An integrated four-way passive crossover coordinates the drivers across the frequency range, helping produce a cohesive presentation with controlled bass, clear vocals and finely rendered high-frequency detail. The published frequency response is 5Hz–22kHz.
Hear the Space and Detail in Your Music
64 Audio's tia tubeless high-frequency driver and integrated waveguide are designed to reduce unwanted resonance while preserving treble clarity and spatial information. The included apex pressure-relief system allows air to escape from the sealed ear canal, helping reduce pressure during longer listening sessions while maintaining sound isolation. Interchangeable apex modules provide options for tailoring the listening experience.
Precision-Machined Materials and Quality Accessories
The XIO housings are precision-machined from 904L stainless steel and finished with a black Diamond-Like Carbon coating for a durable, distinctive appearance. A silver-plated UP-OCC copper Litz cable with a 4.4mm balanced plug is included, alongside a leather carrying case, cleaning accessories and silicone and foam ear tips in three sizes. With a 0.78mm two-pin connection, the detachable cable can also be replaced with a compatible alternative.
General Specifications
Model: XIO
Driver Configuration: 2 × low-frequency dynamic drivers, 6 × mid-frequency balanced armature drivers, 1 × high-mid-frequency balanced armature driver and 1 × tia high-frequency balanced armature driver
Housing Material: 904L stainless steel with DLC (diamond-like carbon) coating
Frequency Response: 5Hz–22kHz
SPL Sensitivity: 103dB at 1kHz, 1mW
Impedance: 6.3Ω at 1kHz
Crossover: Integrated 4-way passive crossover
Cable Specifications
Connector: 0.78mm 2-pin
Cable: 4.4mm silver-plated UP-OCC copper Litz cable
Apex Modules
m20: Silver
Special m15: 904L stainless steel with DLC coating
m12: Gold
mX: Black
What's in the Box
In-Ear Monitors: XIO universal in-ear monitors
Carrying Case: 64 Audio premium leather case
Foam Ear Tips: TrueFidelity foam ear tips in sizes S, M and L
SpinFit Ear Tips: SpinFit silicone ear tips in sizes S, M and L
Silicone Ear Tips: Silicone ear tips in sizes S, M and L
Cleaning Tool: 1 × cleaning tool
Cleaning Cloth: 1 × cleaning cloth
Cable Clip: 1 × cable clip
Cable: 4.4mm silver-plated UP-OCC copper Litz cable
Apex Modules: m20 (silver), special m15 (904L stainless steel with DLC coating), m12 (gold) and mX (black)
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 orders over £50. Next working day delivery is available from £5.99, and is FREE on orders over £200.
For orders to UK non-mainland and international destinations, additional charges will apply at checkout. Please see below for more information.
How long does delivery take?
Depending on the delivery service you choose, delivery usually takes between 1-4 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 3pm 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.
Post Brexit some of our delivery partners have changed the way we ship to international and offshore destinations. This means that the cost of shipping to some locations has increased significantly and additional paperwork may need to be completed for some international orders.
Shipping for all items to UK Non-Mainland and International destinations will incur a charge at checkout. This charge is not final and additional postage may be required. Furthermore, this may incur additional delivery delays and also local customs charges which the buyer is responsible to pay.
Shipping to international destinations may require further security checks and I.D. to be provided by the cardholder. We reserve the right to cancel any orders where an order does not pass our security checks or the additional postage is not paid.
To avoid any confusion we would advise that you contact us before making your 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 8561 9845 and one of our adviser's will be happy to help.
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 30 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 30 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 30 days
- We will not offer a refund after 30 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 30 days
- If your items become faulty within 30 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 30 days
- After 30 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 30 days we will not cover you for any carriage costs.