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Truthear Pure specifications and in-depth review

Truthear Pure

Manufacturer: Truthear

The Truthear Pure is an in-ear monitor built around a hybrid driver configuration combining one dynamic driver with three balanced armature units, housed in a 3D-printed resin shell. The dynamic driver uses a composite diaphragm, and the overall construction reflects a design approach common in multi-driver IEMs where each driver type handles a distinct portion of the frequency range. The Pure ships without a built-in microphone, in-line controls, or a travel bag.

On the technical side, the Truthear Pure operates at 13.8 Ohms impedance with a total harmonic distortion rating of ≤1% measured at 1 kHz and 94 dB, and covers a frequency range from 20 Hz to 20,000 Hz across its four drivers. The included cable is 1.2 meters long, made from oxygen-free copper, and connects via a 2-Pin 0.78 mm detachable system terminating in a standard 3.5 mm plug.

Pros
  • The detachable cable with a 2-Pin 0.78 mm connection allows for straightforward cable replacement or swapping
  • The oxygen-free copper cable helps maintain signal integrity over its 1.2-meter length
  • A hybrid four-driver setup with both a dynamic driver and three balanced armature units covers a wide range of acoustic responsibilities
  • The 3D-printed resin shell allows for precise internal geometry suited to housing multiple driver types
  • Total harmonic distortion rated at 1% or below at 1 kHz and 94 dB reflects a controlled distortion profile
  • Low impedance of 13.8 Ohms means the IEM can be driven without requiring high-output source equipment
Cons
  • No travel bag is included, requiring users to source their own carrying solution
  • The absence of an in-line control panel means volume and playback adjustments must be made directly on the source device
  • No built-in microphone, making it unsuitable for hands-free calls without a separate solution
  • The 3.5 mm termination limits direct compatibility with devices that lack a headphone jack
Who is this for?

This IEM is well suited to listeners who want a multi-driver hybrid setup without needing high-powered source equipment, given its low 13.8 Ohm impedance that allows it to be driven directly from a smartphone, DAP, or portable dongle. The detachable 2-Pin cable makes it a practical option for users who value the ability to swap or replace cables over time. The wide frequency range from 20 Hz to 20,000 Hz and the low THD rating also make it a reasonable fit for those who prioritize clean, controlled sound reproduction in everyday listening or commuting scenarios.

Who is this NOT for?

Users who frequently take calls or need voice communication on the go will find this IEM limiting, as it lacks a built-in microphone and in-line controls, requiring all interactions to go through the source device directly. Those who need a portable, self-contained listening kit will also be at a disadvantage since no travel bag is included for storage or protection. Additionally, listeners using modern devices without a 3.5 mm headphone jack will face immediate compatibility issues, as the cable terminates exclusively in a standard 3.5 mm connector with no alternative termination option provided.

General info:

Driver configuration 1DD + 3BA
Type of drivers Dynamic driver (DD), Balanced armature (BA)
Diaphragm material Composite
Shell material/process 3D-printed resin
has a built-in microphone ✕
travel bag is included ✕
Has an in-line control panel ✕

The Truthear Pure uses a hybrid driver configuration consisting of one dynamic driver and three balanced armature units, combining two distinct driver technologies within its 3D-printed resin shell. The dynamic driver features a composite diaphragm, contributing to the overall four-driver setup. This model does not include a built-in microphone, an in-line control panel, or a travel bag.

Specifications:

drivers count 4
impedance 13.8 Ohms
Total harmonic distortion (THD) ≤1% (@1kHz, 94dB)
lowest frequency 20 Hz
highest frequency 20000 Hz

The Truthear Pure houses a total of four drivers and operates at an impedance of 13.8 Ohms, making it relatively easy to drive. Its total harmonic distortion is rated at ≤1% measured at 1 kHz and 94 dB, indicating a low distortion threshold under standard test conditions. The frequency response spans from 20 Hz at the low end up to 20,000 Hz at the high end.

Cable:

Connector type 3.5 mm
Pin connector 2-Pin (0.78 mm)
Cable material Oxygen-free copper (OFC)
cable length 1.2 m
has a detachable cable ✓

The Truthear Pure comes with a detachable cable made from oxygen-free copper (OFC), measuring 1.2 meters in length. It connects to the earphones via a 2-Pin 0.78 mm connector and terminates in a standard 3.5 mm plug at the other end.

Final Verdict

The Truthear Pure presents itself as a competently specified in-ear monitor built around a hybrid 1DD + 3BA driver configuration housed in a 3D-printed resin shell, with a low 13.8 Ohm impedance that keeps it accessible to source devices without dedicated amplification. Its detachable OFC cable adds a layer of long-term practicality, and the controlled THD rating reflects a deliberate focus on clean signal reproduction. Where it falls short is in everyday convenience features — the absence of a microphone, in-line controls, and a carrying case means it is a more focused listening tool than an all-around daily companion. For users whose priority is multi-driver sound delivery in a portable, source-friendly package, the Truthear Pure is a well-rounded option; those seeking a more self-contained or communication-ready setup may need to look beyond what this model offers out of the box.