“The sound in general is quite sparkling, open and well balanced for a single driver IEM. The first thing i notice is that the bass is a little flat and boring. It doesn't have that good punch, warmth or layered experience most high-end IEM's possess. Once the music evolves to more complex compositions it's losing it's composure and that's were you notice most these are $30...” --Xstream
Spark High Definition In-ear Headphones are the combination of precision acoustics, unique design and expert ergonomic research. Powerful and accurate acoustics are achieved through high performance dynamic driver and special high definition acoustic filter built-in, resulting in full, explosive bass, intense mid-range and clear treble frequency response that will put a smile on your face...