The bottom line The most capable subwoofer here on driver size and amplifier rating — with the extension figure that would prove it left unpublished.
What the driver size buys
30.5 cm. Air. A larger cone moves more of it for the same excursion, which means it reaches a given level with less distortion. That is heard as effortlessness rather than as depth, and it is the practical difference between a big subwoofer and a small one playing loudly.
The power figures, read properly
200 W / 400 W — sustained and peak. Quoting both is the trade convention and it is more useful than a single unconditioned number: the first says what the amplifier holds, the second what it delivers briefly.
What is not published here
Frequency extension with a tolerance — a figure like “28 Hz (−6 dB)”. That is the number that says how low it actually goes, and its absence means the driver size has to stand in for it.
Placement, before anything else
Room modes decide what arrives at your seat, and moving a subwoofer a metre changes that more than replacing it does. Try the corner, the front wall and beside the seating with the same passage each time.
Matching it
Set the crossover where the main speakers stop, not where the subwoofer can reach. Handing frequencies to the subwoofer that the mains handle well is what makes a system sound heavy rather than deep.
Availability
On sale at around 369 € on the German, American and British Amazon stores at the time of checking.
Listed but with no offer on the French, Italian and Spanish Amazon stores — the reference exists there and nobody is currently selling it.
Prices and availability are what Keepa reported on the date this page was updated; both move.
Prices quoted in this text were read on 4 September 2026. The live price is at the top of the page.
What we like, and what we don't
Strengths
A 30.5 cm driver moves considerably more air than the 20 cm drivers elsewhere in this catalogue
Power stated as a pair — sustained and peak — which is the trade convention and more informative than a single number
From a maker whose speakers in this catalogue publish high sensitivity, so the range matches easily
Compromises
No frequency extension figure with a tolerance published in this listing
A 12-inch cabinet is large, and it has to go somewhere the room supports
The most expensive subwoofer here
Specifications
Driver
30.5 cm (12 inch) — stated
Amplifier
Digital — stated
Power
200 W / 400 W — stated as a sustained and peak pair
Type
Active, amplifier built in — stated
Frequency extension
Not stated in this listing
Amazon reference
DE B0B5RMLFF4 · US B00MJ1YR8Y · GB B00MJ1YR8Y · FR B00MJ1YR8Y · IT B00MJ1YR8Y · ES B00MJ1YR8Y
EAN
0743878026153
Questions people actually ask
Does a bigger driver always go lower?
Not by itself — cabinet design and tuning matter as much. What a larger driver does reliably is move more air for the same excursion, which means less distortion at a given level. The extension figure would settle it, and it is not published here.
What do "200 W / 400 W" mean?
A sustained figure and a peak figure, which is how the trade quotes subwoofer amplifiers. It is more informative than a single number because it separates what the amplifier holds from what it can deliver briefly.