It's Bass Alone. It's at 4222 Voltaire Street in Ocean Beach, about 5 miles from downtown.
Here's a link.
Bass Alone
The owner, Val L'Heuroux, is a cool guy, but he's not always there. They have some nice stuff, but not a huge inventory. Lots of the new Bergantino IP series.
Here's a link to a map.
Map to Bass Alone