Conclusion

The S4 is a smooth sounding iem that is able to provide natural bass reproduction, laid-back midrange and soothing treble. There is a controlled presentation and emotions are expressed well. In addition, the shells are made of resin and the build quality is good. It comes with a 8 core detachable cable. The Fearless S4 delivers a relaxing sound that provides a sublime yet enjoyable listen.

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