Home Slickdeals Monolith by Monoprice 15″ V2 Piano black subwoofer $1095.52 at Amazon Slickdeals Monolith by Monoprice 15″ V2 Piano black subwoofer $1095.52 at Amazon By ARCOM - 27 July 2022 36 0 SHARE Facebook Twitter Go to the deal page: Monolith by Monoprice 15″ V2 Piano black subwoofer $1095.52 at Amazon