The JOYO JMH-04 is a pair of wired, over-ear monitoring headphones designed for general audio use, including music listening, podcasting, and connecting to musical instruments. They are a budget-friendly option from JOYO, a company known for its affordable guitar equipment. 

Design and comfort  -  The JMH-04 headphones have an over-ear, closed-back design with soft earcups and a padded, adjustable headband. They are lightweight and foldable for easy transport.

Audio quality  -  Equipped with 40mm aperture drivers.  Delivers clear sound with a full dynamic range.  Provides rich bass and crisp mids, according to product descriptions.

The JMH-04 is a simple monitoring headset designed for daily listening and basic monitoring tasks.

Connectivity: The headphones are wired and include both a 3.5mm plug and a 6.35mm adapter for compatibility with various devices, such as laptops, stereos, phones, amplifiers, and keyboards.

Specifications:

Impedance: 32 Ohms.

Sensitivity: 95 dB/mW.

Frequency response: 20–22,000Hz