AudioEngine S8 Subwoofer Review - Best Sub for your A5+ Speakers
Amazon.com: Audioengine S8 Powered Subwoofer Speaker - 250W 8-inch Home Subwoofer with Built-in Amplifier and Dual Audio Inputs for Home Speaker System (Black) : Electronics
Audioengine S8 (Satin Black) Compact powered subwoofer at Crutchfield