Funk Audio Custom 21.0 vs Power Sound Audio (PSA) V3600I

Last updated: September 17, 2026

Short answer: the Funk Audio Custom 21.0. Both are rated 4.5/5 for sound quality (#12 and #10 of 110 subwoofers), and the Funk Audio Custom 21.0 costs $6061.91 against $6995 for the Power Sound Audio (PSA) V3600I, with sound quality a draw, the lower price decides it.

Funk Audio Custom 21.0 vs Power Sound Audio (PSA) V3600I

Buy the Funk Audio Custom 21.0. Both are rated the same for sound quality, and it costs $933.09 less than the Power Sound Audio (PSA) V3600I.

Still deciding? The full Subwoofers rankings cover every ranked option.

Specifications Side By Side

Funk Audio Custom 21.0 Power Sound Audio (PSA) V3600I
Price$6,061.91$6995
Ranked#12 of 110 in Large Home Subwoofers (Over 75 lbs)#10 of 110 in Large Home Subwoofers (Over 75 lbs)
Enclosuresealedported, front
Output SPL at 10 Hz97.4 dB-
Output SPL at 12.5 Hz101.1 dB-
Output SPL at 15 Hz105.7 dB-
Output SPL at 20 Hz109.8 dB119.4 dB
Output SPL at 25 Hz114.2 dB119.4 dB
Output SPL at 31.5 Hz120.4 dB119.4 dB
Output SPL at 40 Hz124.1 dB128.3 dB
Output SPL at 50 Hz126.8 dB128.3 dB
Output SPL at 63 Hz129.0 dB128.3 dB
Output SPL at 80 Hz131.0 dB-
Output SPL at 100 Hz132.6 dB-
Output SPL at 125 Hz133.0 dB-
CEA-2010-A Average (40-80Hz)127.7 dB128.3 dB (avg of 3/4 bands)
Dimensions22.8"H x 22.2"W x 20.5"D (577.9 x 565.1 x 520.7 mm)44"H x 20"W x 25"D (1117.6 x 508.0 x 635.0 mm)
Weight145.1 lbs (65.8 kg)196 lbs (88.9 kg)
Warranty35
Cabinet Colorwood, custom-
CountryCanadaUnited States
Measurement SourceData-bassManufacturer
Drivers21" (533mm) driver2x 18" (457mm) driver
InputsXLR (balanced)-
XLR InputYes-
RCA InputNo-
TRS InputNo-
Optical InputNo-
Coaxial InputNo-
USB InputNo-
HDMI InputNo-
AES InputNo-
Aux InputNo-

More worthwhile head-to-heads for Power Sound Audio (PSA) V3600I:

Prices on this page were last checked September 23, 2026 at 11:24 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

Funk Audio Custom 21.0: $6,061.91 eBay

Funk Audio Custom 21.0 ranking card

Pros: Independent CEA-2010 testing records 109.8 dB at 20 Hz and 127.7 dB through 40-80 Hz. The sealed enclosure with 21” (533mm) driver has the headroom for demanding film bass in a large room.

Cons: The 577.9H x 565.1W x 520.7D mm cabinet and 65.8 kg mass make this a serious placement and moving commitment. A sealed cabinet still needs careful placement and calibration to avoid room-mode peaks.

Notes: Data-bass labeled this sub as ‘FW21.0’, but original name is 21.0

Full Funk Audio Custom 21.0 review and specifications →

AES InputNo
Aux InputNo
CEA-2010-A Average (40-80Hz)127.7 dB
Cabinet Colorwood, custom
Coaxial InputNo
CountryCanada
Dimensions22.8"H x 22.2"W x 20.5"D (577.9 x 565.1 x 520.7 mm)
Drivers21" (533mm) driver
Enclosuresealed
HDMI InputNo
InputsXLR (balanced)
Measurement SourceData-bass
Optical InputNo
Output SPL at 10 Hz97.4 dB
Output SPL at 12.5 Hz101.1 dB
Output SPL at 15 Hz105.7 dB
Output SPL at 20 Hz109.8 dB
Output SPL at 25 Hz114.2 dB
Output SPL at 31.5 Hz120.4 dB
Output SPL at 40 Hz124.1 dB
Output SPL at 50 Hz126.8 dB
Output SPL at 63 Hz129.0 dB
Output SPL at 80 Hz131.0 dB
Output SPL at 100 Hz132.6 dB
Output SPL at 125 Hz133.0 dB
RCA InputNo
TRS InputNo
USB InputNo
Warranty3
Weight145.1 lbs (65.8 kg)
XLR InputYes
Search eBay for Funk Audio Custom 21.0 →

Power Sound Audio (PSA) V3600I: $6995 eBay

Power Sound Audio (PSA) V3600I ranking card

Pros: Published CEA-2010 specifications list 119.4 dB at 20 Hz and 128.3 dB (avg of 3/4 bands) through 40-80 Hz. The ported, front enclosure with 2x 18” (457mm) driver has the headroom for demanding film bass in a large room.

Cons: The 1117.6H x 508.0W x 635.0D mm cabinet and 88.9 kg mass make this a serious placement and moving commitment. Ported output does not solve room modes, so careful placement and calibration remain essential.

Full Power Sound Audio (PSA) V3600I review and specifications →

CEA-2010-A Average (40-80Hz)128.3 dB (avg of 3/4 bands)
CountryUnited States
Dimensions44"H x 20"W x 25"D (1117.6 x 508.0 x 635.0 mm)
Drivers2x 18" (457mm) driver
Enclosureported, front
Measurement SourceManufacturer
Output SPL at 20 Hz119.4 dB
Output SPL at 25 Hz119.4 dB
Output SPL at 31.5 Hz119.4 dB
Output SPL at 40 Hz128.3 dB
Output SPL at 50 Hz128.3 dB
Output SPL at 63 Hz128.3 dB
Warranty5
Weight196 lbs (88.9 kg)
Search eBay for Power Sound Audio (PSA) V3600I →