Season 9 of "Shark Tank," which aired in 2017, showcased a product designed for audiophiles. It is called RokBlok, and it's a portable record player. Vinyl records have a following, and there are some ...

The very name turntable conjures a pretty accurate image of how it works, with the platter that the record sits on essentially being a table that turns. That’s how all record players work, right? With ...