A good way to build a decent home subwoofer. Enclosure-mounted subwoofer amplifier, 1200 watts RMS, 4000+ watts peak power. Includes amplifier board, screen and power cable.

App: SVS app for iOS and Android

For an additional fee, you can purchase screen glass and buttons

Amplifier Specs:

Sledge STA-1200D with 1200 watts RMS continuous power (4000+ watts peak dynamic power)
*Unmatched intelligence from user adjustable low pass, phase, polarity and room
gain compensation with three parametric EQs and port tuning (Ported
models only) for absolute best alignment with speakers and optimized
performance in any room.
*Groundbreaking SVS Bluetooth DSP control app for iOS and Android devices with three user presets allow custom tuning for every room and system.
*High efficiency cool-running Class D switching topology with massive 32 Amp 600 Volt
MOSFET’s result in lower EMI and highest efficiency while providing
effortless power to produce SPLs and low frequency output with pristine
clarity well beyond reference listening levels.
*High resolution 50MHz Analog Devices Audio DSP with double precision 56bit filtering is
most advanced subwoofer processor available for perfect audio
reproduction.
*100v-240v full range input active Power Factor
Correction (PFC) pre-regulates mains to solid 360V DC regardless of
mains voltage or quality so the sound quality never falters no matter
what’s coming out of the wall.
*Active PFC lowers average current and smooths mains input current allowing for full output from a standard 15A mains circuit.
*XLR and RCA stereo input/output with ultra-wide input voltage for consumer and professional audio applications.
*Convenientfront-mounted display featuring new Intelligent Feature Control (IFC)
with bright blue dimmable/defeatable 8-digit LED front display.
*Custom EQ and DSP limiter settings tuned specifically for the PB-4000 ported cabinet design.
*Auto/On and 3-12V AC/DC trigger for Maximum Installation Convenience.Input impedance 22kohm (unbalanced RCA)/ 22kohm (balanced XLR).
*Green 0.5-watt low standby power consumption

SVS App Specs:

*The most powerful and flexible Bluetooth controlled subwoofer DSP app, works with both iOS and Android operating systems.
*Easiestand most convenient way to adjust crossover frequencies, parametric EQ,
polarity, room gain and all other bass management functions.
*Three convenient custom presets allow for perfect tuning in any room or system, from your favorite seat.