The FiiO JH5 is a hybrid in-ear monitor (IEM) featuring a combination of one carbon-based dynamic driver and four customized balanced armature (BA) drivers. This design aims to provide a balanced sound signature with an emphasis on bass. With a frequency response range of 20Hz to 40kHz, it effectively covers low to high-frequency sounds. The JH5 has a low impedance of 13Ω at 1kHz and a sensitivity rating of 111dB SPL/mW, allowing it to be easily powered by a wide variety of devices, including smartphones and portable audio sources. The JH5's build features a sandwiched construction with a medical-grade 3D-printed resin for the lower shell and a cast alloy metal faceplate, giving it a sturdy yet comfortable design. It comes equipped with a 1.2m silver-plated copper cable that uses standard 0.78mm 2-pin connectors. With excellent isolation and comfort, it’s suitable for long listening sessions. The sound signature boasts enhanced mid-bass, making it particularly suitable for genres like rock and metal, while being adaptable enough for various music styles. However, while the bass performance is noteworthy, some users may find the midrange slightly impacted by the bass emphasis, leading to a bit of muddiness in lower-mids. The treble offers decent extension but lacks the level of detail retrieval found in higher-end monitors. Overall, the FiiO JH5 represents a solid option for those looking for an engaging listening experience without the need for high-end audio sources.