The sound the Smile Jamaicas make is undoubtedly rich with a full, sometimes overbearing amount of bass, depending on the style of music. While Talking Heads' "Psycho Killer," with its willowy bass lines, sounded full and peppy, a song with a deeper bass part like Nick Cave's "Red Right Hand" could become overwhelming -- particularly when using a portable player. However, music built around a dominating bass line -- dance, for example -- sounded great with plenty of definition and true depth.
Meanwhile, vocal details were present and alive, and the sound had a snap to it that eludes cheaper earbuds. While intimate music like jazz sounded great, more-symphonic music like Sigur Ros sounded a bit constrained.
If you're looking for a set of rugged headphones on a budget that sound decent with a wide selection of music and offer good isolation, then these House of Marleys are an excellent option.