Perlisten Audio D215s vs RBH Sound Unrivaled 21-SF/R

Last updated: September 29, 2026

Short answer: the Perlisten Audio D215s. It ranks #37 of 109 subwoofers by sound quality, rated 4.2/5, at $9,000; the RBH Sound Unrivaled 21-SF/R ranks #75, rated 4.1/5, and costs $11,995, so there is little reason to consider the other one.

Perlisten Audio D215s vs RBH Sound Unrivaled 21-SF/R

The case for the Perlisten Audio D215s: Independent CEA-2010 testing records 109.2 dB at 20 Hz and 123.2 dB through 40-80 Hz. The tradeoff: The 805.2H x 500.4W x 650.2D mm cabinet and 91.8 kg mass make this a serious placement and moving commitment.

The case for the RBH Sound Unrivaled 21-SF/R: Manufacturer-supplied CEA-2010 data records 112.3 dB at 20 Hz and 118.8 dB through 40-80 Hz, with a passing result down to 10 Hz. Watch for: At around 333 lbs, moving or placing this cabinet is a multi-person job, and the price puts it well outside typical home theater budgets.

Buy the Perlisten Audio D215s. It is rated higher for sound quality than the RBH Sound Unrivaled 21-SF/R and costs less, which makes it the one to get unless you need something the other one does better.

Looking for alternatives? See the complete Subwoofers rankings.

Specifications Side By Side

Perlisten Audio D215s RBH Sound Unrivaled 21-SF/R
Price$9,000$11,995
Ranked#37 of 109 in Large Home Subwoofers (Over 75 lbs)#75 of 109 in Large Home Subwoofers (Over 75 lbs)
Enclosuresealedsealed
Output SPL at 10 Hz93.0 dB91.3 dB
Output SPL at 12.5 Hz98.8 dB97.7 dB
Output SPL at 15 Hz104.3 dB-
Output SPL at 20 Hz109.2 dB112.3 dB
Output SPL at 25 Hz113.3 dB117.2 dB
Output SPL at 31.5 Hz117.2 dB120.1 dB
Output SPL at 40 Hz120.8 dB119.5 dB
Output SPL at 50 Hz122.8 dB118.7 dB
Output SPL at 63 Hz124.0 dB118.4 dB
Output SPL at 80 Hz125.0 dB118.7 dB
Output SPL at 100 Hz125.6 dB119.2 dB
Output SPL at 125 Hz126.6 dB-
CEA-2010-A Average (40-80Hz)123.2 dB118.8 dB
Dimensions31.7”H x 19.7”W x 25.6”D (805.2 x 500.4 x 650.2 mm)27.3”H x 43”W x 21”D (692.2 x 1092.2 x 533.4 mm)
Weight202.4 lbs (91.8 kg)332.9 lbs (151.0 kg)
Warranty5-
Cabinet Colorblack, custom-
CountryUnited StatesUnited States
Measurement SourceAudioholicsManufacturer
Drivers2x 15” (381mm) drivers21” carbon fiber driver
InputsXLR (2, balanced), RCA (2, unbalanced)-
XLR InputYes-
RCA InputYes-
TRS InputNo-
Optical InputNo-
Coaxial InputNo-
USB InputNo-
HDMI InputNo-
AES InputNo-
Aux InputNo-
Output SPL at 14 Hz-100.8 dB
Output SPL at 16 Hz-105.5 dB
Frequency Response-12-80Hz, ±3dB
Power Handling-4000W thermal power handling

More top alternatives to Perlisten Audio D215s:

Prices on this page were last checked September 29, 2026 at 3:43 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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The Two Speakers In Full

Perlisten Audio D215s: $9,000 eBay

Perlisten Audio D215s ranking card

Pros: Independent CEA-2010 testing records 109.2 dB at 20 Hz and 123.2 dB through 40-80 Hz. The sealed enclosure with 2x 15” (381mm) drivers has the headroom for demanding film bass in a large room.

Cons: The 805.2H x 500.4W x 650.2D mm cabinet and 91.8 kg mass make this a serious placement and moving commitment. A sealed cabinet still needs careful placement and calibration to avoid room-mode peaks.

Full Perlisten Audio D215s review and specifications →

AES InputNo
Aux InputNo
CEA-2010-A Average (40-80Hz)123.2 dB
Cabinet Colorblack, custom
Coaxial InputNo
CountryUnited States
Dimensions31.7”H x 19.7”W x 25.6”D (805.2 x 500.4 x 650.2 mm)
Drivers2x 15” (381mm) drivers
Enclosuresealed
HDMI InputNo
InputsXLR (2, balanced), RCA (2, unbalanced)
Measurement SourceAudioholics
Optical InputNo
Output SPL at 10 Hz93.0 dB
Output SPL at 12.5 Hz98.8 dB
Output SPL at 15 Hz104.3 dB
Output SPL at 20 Hz109.2 dB
Output SPL at 25 Hz113.3 dB
Output SPL at 31.5 Hz117.2 dB
Output SPL at 40 Hz120.8 dB
Output SPL at 50 Hz122.8 dB
Output SPL at 63 Hz124.0 dB
Output SPL at 80 Hz125.0 dB
Output SPL at 100 Hz125.6 dB
Output SPL at 125 Hz126.6 dB
RCA InputYes
TRS InputNo
USB InputNo
Warranty5
Weight202.4 lbs (91.8 kg)
XLR InputYes
Search eBay for Perlisten Audio D215s →

RBH Sound Unrivaled 21-SF/R: $11,995 eBay

RBH Sound Unrivaled 21-SF/R ranking card

Pros: Manufacturer-supplied CEA-2010 data records 112.3 dB at 20 Hz and 118.8 dB through 40-80 Hz, with a passing result down to 10 Hz. The 21” carbon fiber driver and 4,000W thermal power handling gave this sub the first Extreme Bassaholic room rating on record.

Cons: At around 333 lbs, moving or placing this cabinet is a multi-person job, and the price puts it well outside typical home theater budgets.

Full RBH Sound Unrivaled 21-SF/R review and specifications →

CEA-2010-A Average (40-80Hz)118.8 dB
CountryUnited States
Dimensions27.3”H x 43”W x 21”D (692.2 x 1092.2 x 533.4 mm)
Drivers21” carbon fiber driver
Enclosuresealed
Frequency Response12-80Hz, ±3dB
Measurement SourceManufacturer
Output SPL at 10 Hz91.3 dB
Output SPL at 12.5 Hz97.7 dB
Output SPL at 14 Hz100.8 dB
Output SPL at 16 Hz105.5 dB
Output SPL at 20 Hz112.3 dB
Output SPL at 25 Hz117.2 dB
Output SPL at 31.5 Hz120.1 dB
Output SPL at 40 Hz119.5 dB
Output SPL at 50 Hz118.7 dB
Output SPL at 63 Hz118.4 dB
Output SPL at 80 Hz118.7 dB
Output SPL at 100 Hz119.2 dB
Power Handling4000W thermal power handling
Weight332.9 lbs (151.0 kg)
Search eBay for RBH Sound Unrivaled 21-SF/R →