Short answer: both are discontinued, and they are rated the same for sound quality (#57 and #71 of 143 subwoofers). Either one is only an option used, so choose on condition and price. If you want one new, the HSU Research VTF-TN1 replaces the HSU Research VTF-15H MK2 and is rated 3.9/5 at $1,249.
Buy the HSU Research VTF-15H MK2 or the Monoprice Monolith M-15 V2, whichever you find used in better condition; both are discontinued. For a new speaker, buy the HSU Research VTF-TN1, which replaces the HSU Research VTF-15H MK2.
Still deciding? The full Subwoofers rankings cover every ranked option.
Prices on this page were last checked November 7, 2026 at 7:34 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
| HSU Research VTF-15H MK2 | Monoprice Monolith M-15 V2 | |
|---|---|---|
| Price | $1,499 Discontinued | $1,500 Discontinued |
| Ranked | #57 of 143 in Large Home Subwoofers (Over 75 lbs) | #71 of 143 in Large Home Subwoofers (Over 75 lbs) |
| Enclosure | ported, front | ported, front |
| Output SPL at 15 Hz | 101.6 dB | 106.3 dB |
| Output SPL at 20 Hz | 108.4 dB | 112.6 dB |
| Output SPL at 25 Hz | 114.8 dB | 116.6 dB |
| Output SPL at 31.5 Hz | 119.4 dB | 119.5 dB |
| Output SPL at 40 Hz | 122.9 dB | 120.9 dB |
| Output SPL at 50 Hz | 122.5 dB | 120.6 dB |
| Output SPL at 63 Hz | 121.1 dB | 120.0 dB |
| Output SPL at 80 Hz | 120.5 dB | 118.7 dB |
| CEA-2010-A Average (40-80Hz) | 121.8 dB | 120.0 dB |
| Dimensions | 24”H x 18”W x 26”D (609.6 x 457.2 x 660.4 mm) | 28.7”H x 17.7”W x 26.8”D (729.0 x 449.6 x 680.7 mm) |
| Weight | 110 lbs (49.9 kg) | 132.9 lbs (60.3 kg) |
| Warranty | 7/2(+3) | 5 |
| Cabinet Color | black, wood | black |
| Country | United States | United States |
| Measurement Source | Manufacturer | Manufacturer |
| Drivers | 15” (381mm) driver | 15” (381mm) driver |
| Output SPL at 12.5 Hz | - | 91.0 dB |
| Output SPL at 100 Hz | - | 120.1 dB |
| Output SPL at 125 Hz | - | 120.2 dB |
| Inputs | - | XLR, RCA |
| XLR Input | - | Yes |
| RCA Input | - | Yes |
| TRS Input | - | No |
| Optical Input | - | No |
| Coaxial Input | - | No |
| USB Input | - | No |
| HDMI Input | - | No |
| AES Input | - | No |
| Aux Input | - | No |
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