HSU Research VTF-3 MK5 HP vs Monoprice Monolith M-215

Last updated: November 8, 2026

Short answer: the Monoprice Monolith M-215. It ranks #24 of 143 subwoofers by sound quality, rated 4.4/5, at $1,499.99. The HSU Research VTF-3 MK5 HP ranks #59, rated 4.2/5, at $1,049, $450.99 cheaper, a saving that is not big enough to make up the sound-quality gap.

HSU Research VTF-3 MK5 HP vs Monoprice Monolith M-215

Buy the Monoprice Monolith M-215. It is rated higher for sound quality, and saving $450.99 with the HSU Research VTF-3 MK5 HP does not make up for the sound-quality gap.

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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-3 MK5 HP Monoprice Monolith M-215
Price$1,049.00$1,499.99
Ranked#59 of 143 in Large Home Subwoofers (Over 75 lbs)#24 of 143 in Large Home Subwoofers (Over 75 lbs)
Enclosureported, frontported, front
Output SPL at 15 Hz100.8 dB113.1 dB
Output SPL at 20 Hz108.2 dB118.9 dB
Output SPL at 25 Hz113.4 dB122.6 dB
Output SPL at 31.5 Hz118.2 dB125.2 dB
Output SPL at 40 Hz121.9 dB126.4 dB
Output SPL at 50 Hz122.3 dB126.1 dB
Output SPL at 63 Hz121.1 dB125.6 dB
Output SPL at 80 Hz120.4 dB125.6 dB
CEA-2010-A Average (40-80Hz)121.4 dB125.9 dB
Dimensions25”H x 17.2”W x 24”D (635.0 x 438.1 x 609.6 mm)42.3”H x 20”W x 27.6”D (1074.4 x 508.0 x 701.0 mm)
Weight85.1 lbs (38.6 kg)216.1 lbs (98.0 kg)
Warranty7/2(+3)5
Cabinet Colorblackblack
CountryUnited StatesUnited States
Measurement SourceManufacturerBrent Butterworth
Drivers15” (381mm) driver2x 15” (381mm) drivers
Output SPL at 12.5 Hz-103.9 dB
Output SPL at 100 Hz-125.7 dB
Output SPL at 125 Hz-126.3 dB

How Monoprice Monolith M-215 compares with other leading options: