Short answer: both are discontinued, so this only matters if you are buying used. Used, the Power Sound Audio (PSA) TRIAX is the better pick: it ranks #5 of 143 subwoofers by sound quality (rated 4.5/5), against #57 (rated 4.2/5) for the HSU Research VTF-15H MK2. 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 Power Sound Audio (PSA) TRIAX only if you find one used in good condition; both are discontinued, and it is the better rated of the two. 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.
As an eBay Partner, we may be compensated if you make a purchase.
Specifications Side By Side
| HSU Research VTF-15H MK2 | Power Sound Audio (PSA) TRIAX | |
|---|---|---|
| Price | $1,499 Discontinued | $7,995 Discontinued |
| Ranked | #57 of 143 in Large Home Subwoofers (Over 75 lbs) | #5 of 143 in Large Home Subwoofers (Over 75 lbs) |
| Enclosure | ported, front | sealed |
| Output SPL at 15 Hz | 101.6 dB | - |
| Output SPL at 20 Hz | 108.4 dB | 119.8 dB |
| Output SPL at 25 Hz | 114.8 dB | 119.8 dB |
| Output SPL at 31.5 Hz | 119.4 dB | 119.8 dB |
| Output SPL at 40 Hz | 122.9 dB | 130.9 dB |
| Output SPL at 50 Hz | 122.5 dB | 130.9 dB |
| Output SPL at 63 Hz | 121.1 dB | 130.9 dB |
| Output SPL at 80 Hz | 120.5 dB | - |
| CEA-2010-A Average (40-80Hz) | 121.8 dB | 130.9 dB (avg of 3/4 bands) |
| Dimensions | 24”H x 18”W x 26”D (609.6 x 457.2 x 660.4 mm) | 23.5”H x 31”W x 27.5”D (596.9 x 787.4 x 698.5 mm) |
| Weight | 110 lbs (49.9 kg) | 229.9 lbs (104.3 kg) |
| Warranty | 7/2(+3) | 5 |
| Cabinet Color | black, wood | - |
| Country | United States | United States |
| Measurement Source | Manufacturer | Manufacturer |
| Drivers | 15” (381mm) driver | 3x 15” (381mm) driver |
| Inputs | - | XLR (balanced, with loop output) |
| XLR Input | - | Yes |
| RCA Input | - | No |
| TRS Input | - | No |
| Optical Input | - | No |
| Coaxial Input | - | No |
| USB Input | - | No |
| HDMI Input | - | No |
| AES Input | - | No |
| Aux Input | - | No |
Related Speaker Comparisons
More worthwhile head-to-heads for Power Sound Audio (PSA) TRIAX:
- JTR Speakers Orbit Shifter PRO vs Power Sound Audio (PSA) TRIAX
- JTR Speakers Orbit Shifter LFU vs Power Sound Audio (PSA) TRIAX
- JTR Speakers Captivator 4000ULF vs Power Sound Audio (PSA) TRIAX
- JTR Speakers Captivator 215PRO vs Power Sound Audio (PSA) TRIAX
- JTR Speakers Captivator S2 vs Power Sound Audio (PSA) TRIAX