KZ ESX

The ESX is presented as a definite success and a recommended budget earphone. The reviewer’s conclusion is favorable, especially for buyers wanting a durable, inexpensive set that improves audio quality without costing much.

The reviewer found the KZ ESX technically limited, describing it as somewhat congested and lacking in resolution, especially with busier music. The emphasis is on value rather than refinement, with the overall impression that it is acceptable but not especially competitive on sound quality.

This review treats the ESX as a good low-cost special edition with an appealing build and a 12 mm driver. The conclusion is broadly positive on value, presenting it as a worthwhile inexpensive option.