Short answer: the KRK S12.4, if you are buying new. The KRK Systems 12S measures as well as it (#33 vs #28 of 212 subwoofers, 3.9/5 vs 3.9/5) but is discontinued, so only consider it used; the KRK S12.4 is still sold new at $649.
The case for the KRK S12.4: A 12 inch studio subwoofer built to pair with desk monitors, with a selectable crossover and a footswitch for quick mix checks. The tradeoff: No independent measurements yet, so its output can’t be compared with ranked subwoofers.
The case for the KRK Systems 12S: A 12 inch studio subwoofer with smooth, deep bass, balanced inputs and little port noise, now discontinued. The catch: Output falls steeply below 31.5Hz, to 99.1dB at 25Hz and 92.8dB at 20Hz, and it is rated only down to 32Hz, so the deepest film effects are limited.
Buy the KRK S12.4 if you want one new; the KRK Systems 12S is discontinued, so only look for it used.
Worth knowing: the KRK S12.4 has not been measured yet. Its rating is estimated from related models, with a likely range of 3.7 to 4.1, so treat this verdict as provisional.
Still deciding? The full Subwoofers rankings cover every ranked option.
Prices on this page were last checked November 14, 2026 at 6:17 PM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.
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Specifications Side By Side
| KRK S12.4 | KRK Systems 12S | |
|---|---|---|
| Price | $649.00 | $899 Discontinued |
| Ranked | #28 of 212 in Medium Home Subwoofers (30-75 lbs) Estimated | #33 of 212 in Medium Home Subwoofers (30-75 lbs) |
| Weight | 62.4 lbs (28.3 kg) | 66.6 lbs (30.2 kg) |
| Dimensions | 16.4”H x 23.9”W x 14.4”D (416 x 606 x 365 mm) | 18.1”H x 15.9”W x 22.6”D (460.0 x 404.9 x 575.1 mm) |
| Warranty | 3 | 3 |
| Enclosure | ported, front | ported, front |
| Drivers | 12” Kevlar driver | 12” (305mm) driver |
| Amplifier Power | 220W | 240W RMS |
| Country | United States | United States |
| Output SPL at 20 Hz | - | 92.8 dB |
| Output SPL at 25 Hz | - | 99.1 dB |
| Output SPL at 31.5 Hz | - | 111.0 dB |
| Output SPL at 40 Hz | - | 115.6 dB |
| Output SPL at 50 Hz | - | 118.7 dB |
| Output SPL at 63 Hz | - | 118.2 dB |
| Output SPL at 80 Hz | - | 115.8 dB |
| Output SPL at 100 Hz | - | 113.6 dB |
| Output SPL at 125 Hz | - | 110.6 dB |
| CEA-2010-A Average (40-80Hz) | - | 117.1 dB |
| Measurement Source | - | Data-bass |
| Frequency Response | - | 32-139Hz |
| Inputs | - | XLR (stereo, balanced), TRS (stereo), RCA (stereo) |
| XLR Input | - | Yes |
| RCA Input | - | Yes |
| TRS Input | - | Yes |
| Optical Input | - | No |
| Coaxial Input | - | No |
| USB Input | - | No |
| HDMI Input | - | No |
| AES Input | - | No |
| Aux Input | - | No |
Where the Ratings Come From
- KRK S12.4: manufacturer specifications and listening comparisons; no independent measurement has been published yet.
- KRK Systems 12S: manufacturer specifications and listening comparisons; no independent measurement has been published yet.
This comparison is generated from the ratings, specifications and measurements on each product’s own page, and it updates when that data changes. How we rank explains how each rating is decided.
Related Speaker Comparisons
How KRK S12.4 compares with other leading options: