Known as the first “serious” Marantz speaker, the 6 was designed to compete with Advent, KLH, A/R and others in the “East Coast Sound” category. A Big 2 way with the original woofers and NOS replacement phenolic ring tweeters. I’ve owned them for many years - the Boxes have had a colourful life but they still sound spectacular (I currently have 2 pairs)….not found very often but a nice addition to your Marantz set up, for sure.