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TRUTHEAR ZERO:RED Dual Dynamic Driver In-Ear Headphones

SKU CH-87K8-K940P

Wired in-ear monitors with dual 10 mm and 7.8 mm dynamic drivers, 17.5 ohm impedance and 3.5 mm connector

  • TypeIn-Ear
  • ColorRed
  • Driver Unit10 millimeters
  • Frequency Response40500 hertz
  • THDIn Ear
  • Input Impedance17.5 ohms
  • Dual 10 mm and 7.8 mm dynamic drivers deliver detailed sound
  • Frequency response reaches 40500 Hz for extended treble clarity
  • Low 17.5 ohm impedance ensures easy drive from portable sources
  • 5 mm connector provides universal wired compatibility
  • Optimised cavity design reduces distortion above 94 dB SPL

TRUTHEAR ZERO:RED Dual Dynamic Drivers

The TRUTHEAR ZERO:RED is a wired in-ear headphone built for listeners who want a detailed sound signature without wireless latency. It uses a dual dynamic driver configuration with 10mm and 7.8mm units to deliver a frequency response of 40500 hertz. The 17.5 ohm impedance allows easy driving from portable sources. This model suits audiophiles and gamers seeking a neutral-leaning presentation with enhanced bass presence.

DLP-3D Printed Cavity and Detachable Cable

The earpieces are manufactured using a DLP-3D printing process usually reserved for high-end custom models, featuring a sandwich-like internal structure with hand-finished glue seams. A copper-plated silver cable with thicker individual strands connects via a standard 3.5mm plug and features a detachable design for easy replacement. Touch controls on the shell manage playback without reaching for the source device. The red finish distinguishes the ZERO:RED visually from the standard ZERO series.

Verify 3.5mm Port and Wired Preference

Before ordering, confirm your playback device provides a 3.5mm headphone jack or a compatible adapter, as this model has no wireless capability. The 17.5 ohm input impedance works well with smartphones and laptop outputs, though dedicated amplifiers are not required. Buyers who want active noise cancellation, a built-in microphone for calls, or a fully wireless experience should consider other product lines. The 100 gram weight includes the cable.

Highlights

  • Dual 10 mm and 7.8 mm dynamic drivers deliver detailed sound
  • Frequency response reaches 40500 Hz for extended treble clarity
  • Low 17.5 ohm impedance ensures easy drive from portable sources
  • 5 mm connector provides universal wired compatibility
  • Optimised cavity design reduces distortion above 94 dB SPL

Specifications

BrandTRUTHEAR
Series1
ModelZERO:RED
Part NumberZERO:RED
TypeIn-Ear
ColorRed
Driver Unit10 millimeters
Frequency Response40500 hertz
THDIn Ear
Input Impedance17.5 ohms
Connector3.5mm
Ear CouplingSingle Ear
Weight100 grams
Noise Cancellingnone
Wireless TypeIR
Microphone Impedance17.5 ohm
Microphone Frequency Response40500 hertz
Featuresnone, Detachable, Touch Control, touch, Wired, In Ear, dynamic_driver, 17.5 ohm

Questions about this item

What does the 3.5mm connector cap in practice for these in-ear headphones?

The 3.5mm wired connection delivers analogue audio without wireless latency or battery constraints, supporting the 17.5 ohm impedance and 40500 Hz frequency response directly from any compatible source device.

What physical dimensions and ear coupling style determine the fit of the ZERO:RED?

Each earpiece houses a 10mm and a 7.8mm dynamic driver in a DLP-3D printed cavity weighing 100 grams total, designed for single-ear coupling with detachable copper-plated silver cable.

How are the dual dynamic drivers installed in the cavity, and what assembly step is critical?

The 10mm and 7.8mm drivers use a double-cavity internal magnetic circuit with N52 magnet and polyurethane suspension composite LCP diaphragm, requiring precise hand-made glue dropping and capping to seal seams correctly.

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