As is standard for sub-$100 headphones, the Bass Freq earphones come with few extras, but I was surprised and pleased to find V-Moda's Modawrap in the box. It's a simple-but-handy tool for stowing your cord--and you'll want to use it, because the Bass Freq's ultrathin wire tangles easily. There are also three sizes of silicone ear fittings to help ensure a comfortable fit and provide the necessary seal to provide the deep bass that's implied by the product's name.
As for that implication, the Bass Freqs truly live up to their name. These 'phones really thump on the low end--just make sure you get a good seal in your ear. And I was pleasantly surprised by the overall sound quality of the 'buds, especially considering their low price point. The bass was heavy, but it didn't overshadow the mids and lows in most cases (a handful of rock songs had a slightly muffled quality to them). In general, music sounded rich, warm, and detailed. Hip-hop, jazz, and electronica tracks really shined; even certain rock songs were great--during the Clash's "London Calling," I felt like I was in the studio, and Depeche Mode's "Strangelove" sounded fantastically deep and dark.
Like their sibling, the Remix M-class, the Bass Freqs are also a surprisingly loud set of earbuds--they amplify the music from the sound source by a significant amount compared to other small earphones (so use caution when switching to these 'buds). This factor combined with the many color options make this a perfect set of earphones for the Creative Zen Micro Photo series of MP3 players.