Don’t sell your soul to a creditor to get the gear you need. At AMS, we want to lower the barriers to create. That’s why we offer in-house 0% financing, and you don’t even have to open a new line of credit! Spread out payments on your credit card to simplify financing and avoid hefty late fees or service charges. Cost shouldn’t interfere with your creativity.
Earn rewards every time you shop at AMS. You'll collect points on eligible purchases that turn into promotional savings on future gear, with points typically available several days after your order ships. All you need is a free AMS account — no credit card, financing, or payment plan required.
The more you shop, the more you earn. Create a free account and start earning from your very first eligible purchase. Rewards are applied as a discount on future eligible purchases.
Earn points on eligible purchases with AMS Rewards and turn them into savings on future orders, no credit card required. You can apply points at checkout once they’re available.
Eligible to earn $41.95 for this purchase
OR
12 Payments of $69.92
6 Payments of $139.83 No Credit Check
Compare
Compare! Here are all the serial numbers of this model we have in stock. Compare them all and select your favorite!
Opt in for Notifications on this product for the price drops, stock changes and promotions
Stop guessing what your low-end sounds like and start mixing with actual confidence. The KRK S12.4 Generation 4 subwoofer is here to act as the bedrock of your studio, delivering the kind of tight, accurate bass that transforms muddy productions into polished gems. It doesn't just add volume; it adds clarity, ensuring that what you hear is exactly what you get.
With a massive 220-watt Class D amplifier driving a 12-inch Kevlar composite woofer, this sub offers serious muscle without the flab. Whether you're tracking heavy synths or dialing in a kick drum, the S12.4 provides the transient response and punch you need to make critical decisions. It’s the studio partner that never lies to you.
Precision Performance, Total Control
KRK has long been the gold standard for studio monitoring, and the S12.4 takes that legacy to new depths — literally. It’s designed not just to move air, but to move it with purpose, giving you a defined low-end extension down to 26Hz.
12" Kevlar Composite Woofer: This isn’t your average paper cone. The custom glass-aramid composite woofer is lightweight yet incredibly rigid, minimizing distortion even when you crank the volume. The result? Bass that hits you in the chest but remains tight and articulate, avoiding the dreaded "one-note" boominess of lesser subs.
Class D Amplification: Efficiency meets power. The 220-watt Class D amp runs cool while delivering serious headroom. It dramatically improves transient response, meaning fast bass lines and percussive hits are reproduced with razor-sharp accuracy.
4-Position Crossover: Your room and your monitors are unique, and the S12.4 respects that. The four-position selectable crossover lets you dial in the perfect hand-off frequency between your sub and your full-range monitors, ensuring a seamless, cohesive soundstage rather than two disjointed sound sources.
Workflow That Works for You
A great piece of gear shouldn't slow you down; it should speed you up. The S12.4 is packed with thoughtful features that integrate smoothly into your existing workflow, solving common studio headaches before they even happen.
Front-Firing Port: Placement matters. Unlike rear-firing subs that can create turbulent, muddy bass when placed near walls, the S12.4 features a front-firing port. This design reduces boundary coupling, giving you more flexibility in where you place the sub while maintaining clean, punchy low-frequency extension.
Ground Lift Switch: Hum and buzz are the enemies of a clean mix. The dedicated ground lift switch is your secret weapon against ground loops, ensuring your signal remains pristine and noise-free.
Footswitch Bypass Control: This is the feature you’ll wonder how you lived without. With an optional footswitch, you can instantly bypass the subwoofer and send full-range audio to your main monitors. It allows you to quickly check how your mix translates to systems without a sub, all without leaving the sweet spot.
Built for the Real World
Studio gear takes a beating, but the S12.4 is ready for the long haul. From its robust cabinetry to its universal connectivity, every inch of this sub is engineered to handle the rigors of daily production work while looking professional in any setup.
Reinforced MDF Enclosure: A vibrating cabinet is a noisy cabinet. The S12.4 features an 18mm reinforced MDF enclosure that provides maximum strength and density. This heavy-duty construction kills unwanted resonance dead, ensuring that the only thing vibrating is the air in the room.
Universal Connectivity: Whether you’re running a pro rig or a modest home setup, the S12.4 plays nice with everything. It comes equipped with XLR, 1/4" TRS, and RCA inputs and outputs, meaning you can hook it up to virtually any interface or mixer without a tangled mess of adapters.
Redesigned Form Factor: KRK shaved down the height and depth compared to previous generations, giving the S12.4 a lower profile that fits easier under desks or in tight corners, all while maintaining that timeless, professional aesthetic.
The Next Dimension in Low End
The KRK S12.4 isn't just an upgrade; it's a revelation. By combining power, precision, and practical features like the bypass footswitch, it empowers you to produce better mixes, faster.
KRK S12.4 Features:
12" Kevlar Aramid Composite Woofer: Delivers tight, defined bass with minimal distortion
Bass Extension to 23Hz: Feel the sub-frequencies with a max SPL of 119.9 dB
Footswitch Control: Enables/disables sub and crossover filter for instant A/B comparisons (footswitch sold separately)
Front-Firing Port: Allows for flexible placement near walls without port turbulenc
Class D Amplification: 220 Watts of powerful, lightweight, and efficient power
4-Position Crossover Control: Easily matches the subwoofer to your existing monitors
Universal Connectivity: Features XLR, 1/4" TRS, and RCA inputs and outputs
Ground Lift Switch: Eliminates ground loops for clean, noise-free audio
Reinforced MDF Cabinet: 18mm construction ensures durability and eliminates resonance
This website uses cookies to enhance user experience and to analyze performance and traffic on our website. We also share information about your use of our site with our social media, advertising and analytics partners. View our Privacy Policy.
Privacy Preference Center
Privacy Preference Center
Your Privacy
Your Privacy
When you visit our website, we store cookies on your browser to collect information. The information collected might relate to you, your preferences or your device, and is mostly used to make the site work as you expect it to and to provide a more personalized web experience. However, you can choose not to allow certain types of cookies, which may impact your experience of the site and the services we are able to offer. Click on the different category headings to find out more and change our default settings according to your preference. You cannot opt-out of our First Party Strictly Necessary Cookies as they are deployed in order to ensure the proper functioning of our website (such as prompting the cookie banner and remembering your settings, to log into your account, to redirect you when you log out, etc.). For more information about the First and Third Party Cookies used please follow this link.
More information
Strictly Necessary Cookies
Strictly Necessary Cookies
Always Active
These cookies are necessary for our website to function and cannot be switched off in our systems. They are usually only set in response to your requests for services, such as setting your privacy preferences, logging into your account, or filling in forms. You can manually set your browser to block or alert you about these cookies, but it will prevent parts of our site from working as expected. These cookies do not store any personally identifiable information.
Performance Cookies
Performance Cookies
These cookies allow us to count visits and traffic sources so we can measure and improve the performance of our site. They help us identify which pages are the most and least popular and see how visitors move around our site. All the information these cookies collect is aggregated and therefore anonymous. If you do not allow these cookies, we will not know when you have visited our site and will not be able to monitor its performance.
Functional Cookies
Functional Cookies
These cookies enable the website to provide enhanced functionality and personalization. They may be set by us or by third-party providers whose services we have added to our pages. If you do not allow these cookies, then some or all of these services may not function properly.
Sale of Personal Data
Sale of Personal Data
Under the California Consumer Privacy Act, you have the right to opt-out of the sale of your personal information to third parties. These cookies collect information for analytics and to personalize your experience with targeted ads. You may exercise your right to opt out of the sale of personal information by using this toggle switch. If you opt out we will not be able to offer you personalised ads and will not hand over your personal information to any third parties. Additionally, you may contact our legal department for further clarification about your rights as a California consumer by using this Exercise My Rights link.
If you have enabled privacy controls on your browser (such as a plugin), we have to take that as a valid request to opt-out. Therefore we would not be able to track your activity through the web. This may affect our ability to personalize ads according to your preferences.
Targeting Cookies
Targeting cookies collect information for analytics and to personalize your experience with targeted ads. These cookies may be used to build a profile of your interests to show you relevant ads on other sites. They do not store specific personal information but are based on uniquely identifying your browser and internet device.
You may exercise your right to opt out of the sale of personal information by using the toggle switch in this menu. If you opt out of targeting cookies, we will not offer you personalized ads or share your personal information with any third parties. If you have enabled privacy controls on your browser (e.g., Global Privacy Control), we will automatically opt you out of targeted advertising and the ads you see will not be personalized.
