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M&K S300 Satin Black Left Speaker (Single)


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Condition: New

Brand-new, unused, unopened and undamaged item in original retail packaging (where applicable).


Limited 5-10 year warranty.  More info

Only 2 left in stock.

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Best Home Cinema Speakers

Best Home Cinema Speakers

The soundstage is massive with amazing depth and outstanding cohesion and envelopment, mixed with frighteningly fast transitional changes in volume and dynamics. It never gets tiring to listen to this system and it doesn’t take tens of thousands of pounds in amplification to get the best out of it either, with even modest AVRs able to drive this sub/sat system.

The Best Of The Best!

The Best Of The Best!

"...there's also no doubting that the performance on offer is astonishing. Music and movies are brought to life with incredible accuracy and detail, along with stunning dynamics. This is quite frankly the best sub/sat system I have ever tested. Period."

The S300 is the finest loudspeaker MK has ever made.

For over 40 years, M&K Sound has set the standard for high resolution music and movie audio. Ambitiously engineered to go larger and louder than ever before, the Miller & Kreisel S300 Series is the natural evolution of our iconic S150 monitor. The S300 Series is the first ever M&K Sound product to carry our new reference logo Miller & Kreisel.

The 94db efficiency of the S300 means switching to this speaker system from a 90db efficient speaker ensures very high SPL levels can be achieved without the necessity for esoteric amplification. Wherever the highest performance is required the S300 is our speaker of choice. The S300 Series has been developed in close collaboration with M&K Sounds long term professional partners, key players in music and cinema. The S300 Series is the culmination of more than two years of systematically auditioning and testing the world’s finest audio components.

The S300 Series is designed to let you hear exactly what is going on, no more and no less, there is simply more there. With the 300 Series, we introduce the next dimension for the future of home cinema and music systems.

The S300 Series monitors meet and exceed the highest THX Ultra2 specifications to deliver music and movies with natural, effortless realism and power. THX has chosen them as their new reference loudspeaker and installed the system in their test facilities in California.


  • Tick Triple Tweeter Array Technology
  • Tick MK Sound Proprietary Crossover Technology
  • Tick Anti Resonant Cabinet Technology
  • Tick Bespoke Designed and Built Drivers
  • Tick THX Certification
Leading Edge Technology

Leading Edge Technology

M&K Sound’s engineers have decades of experience in the design of individual drivers as well as complete loudspeaker systems. Because we are fully conversant in the languages of both the acoustical engineer and the audiophile music lover, M&K Sound can enter into a mutually beneficial collaboration with the world’s most acclaimed makers of driver units - Scan-Speak. Aerodynamic air flow design is the watchword for the new generation of drive units designed and built exclusively for the S300 Series to ensure pure, high definition sound with extraordinary speed and transient control.

Independant Evaluation

Independant Evaluation

The Miller & Kreisel S300 loudspeaker system has been subjected to rigorous impartial testing and certified to meet the highest industry performance standard: THX Ultra2. THX is a set of performance standards originally developed by Lucasfilm Ltd. to establish criteria to ensure that the creations of cinematic artists are reproduced exactly as intended. The THX logo immediately became recognised as a seal of approval for quality-conscious cinema-goers around the world. The S300 Series monitors meet and exceed the highest THX Ultra2 specifications, and have been chosen as their new reference loudspeaker and installed in their test facilities in California.

Unique Cabinet Design

Unique Cabinet Design

The S300 Series employs a complex, box-inside- a-box construction with a non- resonant layer of tar joining the two cabinets to provide constrained layer damping. The S300 Series cabinet construction and specially designed drive units lower the mechanical noise floor drastically, bringing music and movies to life with effortless realism, building on a rock-solid foundation.

Innovative Driver Mounting

Innovative Driver Mounting

The S300 Series introduces a specially designed tweeter array mounting flange with integrated waveguide. Rear-mounting the three tweeters to the rigid cast aluminium flange provides exceptional mechanical isolation from the cabinet. The solid steel woofer mounting bracket ensures a tightly sealed connection to the inside of the front baffle.

While we do our best to keep this information up to date, please be aware that all specifications are subject to change by the manufacturer at any time.

Finish Black or White Satin
Impedance 4 Ohm
Sensitivity 94dB
Frequency Response 60 Hz - 22 kHz,+/- 3dB
Recommended Amp Power 25-500 Watts
Dimensions (H x W x D) 395 x 340 x 330
Weight 18.2 kg
Warranty 10 Years Driver

While we do our best to keep this information up to date, please be aware that all specifications are subject to change by the manufacturer at any time.

Options from £2300.00 to £2450.00

Part Exchange Available

Looking to upgrade and not sure what to do with your old gear? Trade-in with us and take the hassle out of finding a new home for your equipment.

We can take back any type of product we sell, from cables, to projectors, speakers, amplifiers, AV receivers, subwoofers and more.

Just fill in the form below and we'll get back to you.

Please note we don't purchase second hand goods for cash, we take trade-ins as part payment towards the purchase of new equipment.

PayPal Credit - Flexible Credit

Buy Now, Pay Later: Get 4 months 0% finance when you spend £99 or more. Look for the PayPal Credit button when making your purchase.

More information on PayPal Credit is available here.

Klarna Finance - Pay Monthly

Pay monthly plans for up to 48 months, available on purchases between £299 and £25,000.

0% ONIF6 6 Months
0% ONIF12 12 Months
0% ONIF24 24 Months
15.9% ONIB36-15.9 36 Months
15.9% ONIB48-15.9 48 Months

Choose your deposit amount

Deposit variable between 10% and 50%, subject to a minimum loan value of £250.


Please note: These finance quotes are for a single purchase of the product listed on this page, at the price shown. Adding additional products or quantities to your order, or using any vouchers or other discounts will result in changes to the quotes and available terms.

For further information please visit the finance page.


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This item is available dispatch Monday to Friday, subject to cut-off times and excluding public holidays. Next working day and weekend deliveries available.

Delivery is available to most addresses within the United Kingdom. Some services may not be available to all postcodes. More information is available at the basket and on our delivery page.

We do not dispatch orders to addresses outside of the United Kingdom.

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