Marantz classic HD-660 - HOME STEREO SPEAKERS w/refoamed woofers [0910140053] - $175.00 : EdsGoodStuff, it's all good
1978 Marantz HD-660 Speakers for Sale in McKinney, TX - OfferUp
Marantz HD660 Loudspeaker System Manual | HiFi Engine
Used Marantz HD-660 Loudspeakers for Sale | HifiShark.com
2 Marantz HD 660 High Definition HD660 Floor Stereo Speaker System Pair Vintage Audio Equipment Set Wood Cabinet Woo… | Vintage speakers, Speakers for sale, Marantz