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KZ EDX Pro X specifications and in-depth review

KZ EDX Pro X

Manufacturer: KZ Audio

The KZ EDX Pro X is an in-ear monitor built around a single dynamic driver configuration with a liquid crystal polymer diaphragm housed in a 3D-printed resin shell. It includes an in-line control panel and a built-in microphone, making it a straightforward wired listening option without the need for a separate travel case.

On the technical side, the EDX Pro X operates at 23 ohms impedance with a sound pressure level of 108 dB/mW and covers a frequency range from 20 Hz up to 40,000 Hz. The detachable cable measures 1.25 meters, uses oxygen-free copper construction, and terminates in a standard 3.5 mm connector with a 2-pin (0.75 mm) attachment point at the earpiece end.

Pros
  • The detachable cable with a 2-pin (0.75 mm) connector allows for easy replacement if the cable wears out over time
  • An oxygen-free copper (OFC) cable is included, which is associated with better signal conductivity than standard copper cables
  • The built-in microphone and in-line control panel add hands-free and playback management convenience without requiring a separate accessory
  • The 3D-printed resin shell allows for a precisely shaped enclosure that can fit the ear canal more accurately
  • A wide frequency range extending up to 40,000 Hz covers well beyond the standard audible spectrum
  • The liquid crystal polymer (LCP) diaphragm is a material known for its rigidity, which helps reduce unwanted distortion at higher frequencies
Cons
  • No travel bag is included, making it less convenient to store or transport the earphones safely
  • At 23 ohms impedance paired with 108 dB/mW sensitivity, the earphones may require a source device with adequate output to drive them properly
  • The 3.5 mm connector limits compatibility with devices that lack a headphone jack
  • A fixed 1.25-meter cable length may feel restrictive for users who need more reach in certain listening scenarios
Who is this for?

The KZ EDX Pro X is well suited to users who want a wired in-ear monitor with everyday usability features like a built-in microphone and in-line control panel, making it practical for commuting, casual listening, or taking calls on the go. Its detachable OFC cable appeals to users who prefer the ability to swap out cables without replacing the entire unit, adding a degree of longevity to the setup. The wide frequency response extending to 40,000 Hz and the LCP diaphragm driver make it a reasonable choice for listeners who value broad frequency coverage in a compact, wired form factor.

Who is this NOT for?

Users who rely on devices without a 3.5 mm headphone jack will face immediate compatibility limitations, as no alternative connector option is provided. Those who frequently travel and need a protective carrying solution will find the lack of an included travel bag inconvenient, as the earphones have no dedicated storage accessory. Additionally, listeners who prefer a completely wireless experience or require Bluetooth connectivity will find this product unsuitable, given its fully wired design with a fixed cable-based setup.

General info:

Driver configuration 1DD
Type of drivers Dynamic driver (DD)
Diaphragm material Liquid crystal polymer (LCP)
Shell material/process 3D-printed resin
has a built-in microphone ✓
travel bag is included ✕
Has an in-line control panel ✓

The KZ EDX Pro X uses a single dynamic driver (1DD) configuration with a liquid crystal polymer (LCP) diaphragm, housed in a shell made from 3D-printed resin. The earphone includes a built-in microphone and an in-line control panel for straightforward playback management, though it does not come with a travel bag.

Specifications:

drivers count 2
impedance 23 Ohms
lowest frequency 20 Hz
highest frequency 40000 Hz
sound pressure level 108 dB/mW

The KZ EDX Pro X houses 2 drivers in total and operates at an impedance of 23 ohms, with a sound pressure level of 108 dB/mW. Its frequency response spans from 20 Hz at the low end up to 40,000 Hz at the high end, covering a wide range across the audible spectrum and beyond.

Cable:

Connector type 3.5 mm
Pin connector 2-Pin (0.75 mm)
Cable material Oxygen-free copper (OFC)
cable length 1.25 m
has a detachable cable ✓

The KZ EDX Pro X comes with a detachable cable made from oxygen-free copper (OFC), measuring 1.25 meters in length. It connects to the earpieces via a 2-pin (0.75 mm) connector and terminates in a standard 3.5 mm plug at the other end.

Final Verdict

The KZ EDX Pro X is a wired in-ear monitor that keeps its proposition straightforward: a single dynamic driver with an LCP diaphragm, housed in a 3D-printed resin shell, paired with a detachable OFC cable and practical features like a built-in microphone and in-line controls. It caters well to users who value a reliable, cable-based listening setup with a broad frequency range and the convenience of a replaceable cable, though it does come with certain practical constraints around connectivity and portability. For listeners who are comfortable with a 3.5 mm wired connection and do not require carry accessories, the KZ EDX Pro X delivers a coherent and functional package that reflects its intended role as a no-frills, everyday in-ear monitor.