Root Down is worthy of its funky name. (For those who don't know look up the song "Root Down" by Jimmy Smith.) It's a small bar opened three years ago by the friendly Yoshikawa-san. The place is dark but cozy with several thousand records and cds, and two speakers that just..I don't have the technical audio vocabulary to describe how damn good these speakers sound.
Double extra points for the Shinto Shrine up on the wall between the awesome speakers, and the brass plaque next to the bar with a quote from Sam Cooke. Yoshikawa-san plays a lot of different styles of music but always with a groove. Check the website for a real-time update of what's being played. Super funky joint!!