B01KBTW9IU Syzygy Acoustics SLF 820 Wireless Subwoofer, Moonstone Black

Full App control (iOS and Android)
Digital Room Correction – full automatic room equalization for limitless placement possibilities
Sound sculpt Technology – allows automatic or manual equalization via Syzygy smartphone App
Front firing or down firing for flexible installation capabilities
Includes WRM TX1 Wireless transmitter; can operate up to 8 Syzygy wireless subwoofers