HK AUDIO Linear 9 118 Sub A - 18" Active SubWoffer, L9-118SUBA
Specification Sheet - HK 980 (English EU) - Harman Kardon
Got my first stereo integrated amplifier of 2019 Harman Kardon HK 980 works fine from facebook - YouTube
Musical Instruments Live Sound & Stage Monitors, Speakers & Subwoofers Rockville RVP18W8 1200 Watt Raw Replacement DJ PA Subwoofer 8 Ohm Sub Woofer 18 inch originsofwhiskey.com
Harman/Kardon Desktop 3 Piece Speaker System with Subwoofer and Satellite HK395 | eBay
Unison Research Unico Due Integrated Amplifier – Verdant Audio