KEF Kube 8 MIE 8" 300W Active Subwoofer - Gloss Black
The KEF Kube 8 MIE is a compact 8" 300W Active Subwoofer featuring Music Integrity Engine DSP, a front-firing long-throw driver and versatile wireless-ready connectivity — delivering powerful, controlled bass from the most compact model in KEF's acclaimed Kube range, ideally suited to smaller rooms.
The KEF Kube 8 MIE proves that powerful bass doesn't require a large footprint. With an 8" driver housed in a sealed cabinet design, it is the most compact model in the Kube range and ideally suited to smaller rooms where space is at a premium without wanting to compromise on bass performance. Sharing the same 300W Class-D amplifier found in its larger siblings, the Kube 8 MIE delivers an unprecedented level of control for a subwoofer of this size, whilst its contemporary, seamlessly elegant design blends naturally into any room's décor.
Music Integrity Engine & Intelligent Bass Extension
At the heart of the Kube 8 MIE is KEF's proprietary Music Integrity Engine (MIE) — a suite of DSP algorithms that ensures every component of the subwoofer works in perfect harmony. The included iBX Intelligent Bass Extension technology dynamically extends bass depth, delivering deeper and more precise low-frequency reproduction at any listening level, from quiet background music to full home cinema impact.
Front-Firing Long-Throw Driver
The Kube 8 MIE features a front-firing long-throw driver with a large cone area and high excursion capability, delivering higher output at lower frequencies than its compact size might suggest. This driver design is paired with an efficient, cool-running 300W Class-D RMS amplifier for sustained, reliable performance whether enhancing movies, music, TV or gaming.
Effortless Wireless Integration
The optional KW1 wireless subwoofer adapter kit (sold separately) enables the Kube 8 MIE to be placed in the optimal position within the room without being limited by cable runs. High-quality wireless transmission ensures every nuance and impact from movies and music is faithfully delivered, even when the subwoofer is positioned away from the rest of the system.
Versatile Connectivity & Room Optimisation
The Kube 8 MIE offers flexible connection options including KEF SmartConnect, RCA phono inputs, speaker level inputs and an expansion port for the KW1 wireless adapter — making it straightforward to integrate into virtually any home cinema or hi-fi system. Three room position EQ presets ensure excellent performance regardless of where the subwoofer is placed in the room, removing the guesswork from positioning. Multiple power modes provide further convenience and flexibility: Auto Wake Up detects incoming audio signals for instant readiness, Always On mode keeps the subwoofer permanently ready to play, and 12V Trigger provides automatic wake-up in conjunction with compatible AV equipment.
KEF Kube 8 MIE Key Features:
- 8" Front-Firing Long-Throw Driver: Large cone area and high excursion for powerful output at low frequencies from a compact enclosure.
- 300W Class-D RMS Amplifier: Efficient, cool-running amplification shared with larger Kube models for unprecedented control.
- Music Integrity Engine (MIE): Proprietary KEF DSP ensures every subwoofer component works in perfect harmony.
- iBX Intelligent Bass Extension: Dynamically extends bass depth for deeper, more precise low-frequency performance at any listening level.
- Sealed Cabinet Design: Facilitates optimal placement flexibility within the room.
- Compact, Elegant Design: The most compact model in the Kube range, designed to blend seamlessly with any room's décor.
- KW1 Wireless Ready: Optional wireless subwoofer adapter kit (sold separately) for cable-free placement flexibility.
- 3 Room Position EQ Presets: Ensures excellent performance regardless of subwoofer placement within the room.
- Multiple Power Modes: Auto Wake Up, Always On and 12V Trigger for flexible, convenient operation.
- Versatile Connectivity: KEF SmartConnect, RCA phono inputs, speaker level inputs and KW1 expansion port.
- Variable Low-Pass Filter: 40Hz–140Hz plus LFE setting for precise integration with any AV or hi-fi system.
- Ideal for Smaller Rooms: Perfectly suited to movies, music, TV and gaming in space-constrained environments.
View our shipping and delivery information below. All prices include VAT.
Important notice for non-UK orders: Any order being shipping outside of the UK will incur an import tax. See below for more information.
Cut-off Times
Orders must be placed before 3:30pm to guarantee same-day dispatch. Any orders placed after this time are not guaranteed to be shipped the same day, and are more likely to be shipped the next working day.
To guarantee Saturday Delivery, orders must ideally be placed before 2pm.
We operate during office hours, Mon-Fri, 9am - 5pm, and are closed during the weekend.
Orders placed over the weekend or Friday after cut-off will be processed and shipped the following Monday (or Tuesday during bank holidays).
Mainland UK Delivery Charges
Note: Next-day services are classed as working days (Mon-Fri) and do not include weekends. Please choose Saturday delivery if you require the item over the weekend.
Please also note orders with a high number of boxes may be subject to an additional charge.
All delivery options will be available at the checkout stage. Please ensure you add a mobile number to your order for tracking information.
Offshore & International
We ship to Scottish Highlands, Islands, Ireland and the EU. Please see the table below for base prices. Please note that these prices are subject to change based on the number of boxes.
The following postcodes fall under 'Highlands & Islands', and are subject to the above rates/lead time.
- Scottish Highlands: FK17-21, IV1-39, IV52-54, IV63, KW1-14, PA21-40 (excluding PA38), PH19-26, PH30-41, PH49-50
- Scottish Islands: HS1-9, IV40-51, IV55-56, KA27-28, KW15-17, PA20, PA38, PA41-49, PA60-78, PH42-44, ZE1-3
If a UK Mainland next-day service is selected at checkout, please be aware that it won't be sent on that service.
If you require a next-day service to Northern Ireland and the highlands, get in touch so we can assist further.
EU Import Tax
Any goods shipped outside of the UK, over a certain value, will incur an import tax. The cost and rate will depend on the country and the order value.
This is a legal requirement and MUST be paid prior to delivery in order to receive your goods. You will be contacted by the courier once the order is dispatched to pay the fee.
Failure to pay import tax when applicable will result in the order being shipped back to Audio Volt. Any returned goods sent back to us due to non-payment of import tax are NOT ELIGIBLE for a refund on the shipping charge.
You can obtain an import duty estimate here.
Delivery Notes
On delivery, you must inspect the goods carefully for damage as Audio Volt is unable to accept responsibility for damage in transit, shortage of delivery or loss of products unless the customer advises Audio Volt of such within three working days from the date of delivery.
60 Day Returns Policy
We ask that you follow these guidelines to help us process your return as quickly and efficiently as possible:
- Please keep your order reference to hand. This confirms your original order and gives us the necessary details to authorise the product's return.
- Contact our Customer Services Team on 02476 369890 (or email info@audiovolt.co.uk). We will then send you an RMA number and a returns form, which needs to be completed and sent back with the returned item(s).
- If the order has been unpacked, re-package it to ensure that it is being returned in its original condition. Please make sure all items relating to the product are returned, including manuals and cables.
- When returning an item, please obtain a proof of postage receipt from the courier.
Returned items must be mailed within 10 days of when the RMA number has been issued. Items received with a post date 30 days after your requested return will NOT be eligible for refund.
Please note: our returns policy is quite straightforward, but there are a number of conditions that we ask our customers to comply with before applying:
- It is your responsibility to request a return. If you don't tell us you want to make a return, we don't know. Once you do tell us, we will do everything we can to action it.
- If you have not requested a return within 60 days of receiving an order, we will assume that you are intending to keep it, and we will not authorise a return.
- We always refund the payment according to how the original purchase was made and aim to do so within 72 hours of the return being received by us.
- Returned goods are liable for a restocking fee of 15% towards handling and repackaging if the order is not returned in its original, unopened packaging. This charge will be subject to our inspection of the returned goods.
- Delivery charges will not be refunded unless the delivered goods are faulty.
- Replacement products are dispatched immediately after the returned goods have been received and accepted by Audio Volt.
- Items that develop a fault within 30 days of delivery are eligible for a replacement or a refund. Delivery costs are also reimbursed for faulty items. Please contact our Customer Services Team on 02476 369890 if you believe your item has developed a fault.
Finally, please remember that notifying us of your intention to apply for a return, saving the delivery paperwork and keeping the order in its original packaging will help both you and Audio Volt to process the return quickly.
Any Questions?
If you have any questions about our returns policy, please telephone us on 02476 369890 or email us at info@audiovolt.co.uk.
We operate during office hours, Mon-Fri, 9am - 5pm, and are closed during the weekend.
