TRN RedChain

4-core silver-plated copper and OFC copper mixed upgrade cable with swappable connectors
Combining the strengths of oxygen-free copper and silver-plated copper
TRN RedChainTRN RedChain
Please note: Photos are for illustration purposes only. Actual products may vary in appearance or specification.

Made with passion with carefully selected materials

Crafted with meticulous attention to detail and using only the choicest materials, our TRN RedChain earphone cable is a 4-core copper-silver blend. It's constructed with two cores of high-purity oxygen-free copper cables and another two cores of silver-plated oxygen-free copper cables, each having 54 strands. This combination creates a total of 216 strands of copper-silver braiding in the TRN RedChain cable. This structure notably enhances the resolution and accurately reproduces the richness of human vocals.
4-core cable
High-purity OFC copper cable

High-purity OFC copper

2 cores, 108 strands
Silver-plated OFC copper cable

Silver-plated OFC copper

2 cores, 108 strands

Exceptional workmanship

Professional audiophile-grade cable
The insulation on the wire is made of imported environmentally friendly materials, and a special protective coating is applied to make the wires more delicate and smoother. High-strength Kevlar fiber is weaved into the wire to minimize signal loss during transmission.
Cable insulation

Metal chin-slider

A reflection of humanized design
The TRN RedChain earphone cable is designed with a unique combination of a metal chin-slider and bead. This innovative design enhances wearing stability and significantly elevates the overall user experience.
TRN RedChain's metal chin-slider

Over-the-ear design for ultimate comfort

The TRN RedChain cable comes with soft and flexible ear hooks. Its over-the-ear design is specially crafted for discerning audiophiles, offering them the comfort of indulging in their listening experiences.
TRN RedChain's ear hooks

The choice is yours

Swappable audio connectors
The TRN RedChain is designed with interchangeable connectors so that users can match the output of their music player. Choose between 3.5mm single-ended / 2.5mm balanced / 4.4mm balanced connections.
TRN RedChain's swappable audio connectors

Transparent, smooth, and non-fatiguing listening

Combining OFC copper and silver-plated OFC copper mixed cable improves bass dynamics and treble extension and presents a wide soundstage. The midrange and vocals are transparent yet full-bodied. Layering, texture, clarity, and the overall sense of air are vastly enhanced.
TRN TA3 connected to TRN RedChain

Instructions for EZ-Swap connectors

When switching EZ-Swap connectors:
Alight both male end
and female ends
of the connector
in a straight line.
Push in both ends
for quick attachment.
Pull both ends for quick detachment.


Product name
TRN RedChain
Jack types
3.5mm + 2.5mm + 4.4mm
Connector types
2-pin (S-type)
Cable configuration
Single core with 54 wires; 4 cores, 216 strands
Cable weight
Over-ears with soft ear loops
* Actual product specifications may vary, and all features, functionality, and other specifications are subject to change without notice or obligation.
TRN RedChain 2.5+3.5+4.4mm
TRN RedChain 2.5+3.5+4.4mm
TRN RedChain 2.5+3.5+4.4mm + Type-C plug
TRN RedChain 2.5+3.5+4.4mm + Type-C plug
TRN RedChain 2.5+3.5+4.4mm + Apple Lightning plug
TRN RedChain 2.5+3.5+4.4mm + Apple Lightning plug


Dongguan Zuodu Acoustics Technology Co., Ltd.
5tn Floor, 67 Baisha Road, Humen Town, Dongguan City, Guangdong Province
QQ: 2550039547
Phone: 400-8080-302
Monday to Sunday 8:30 am to 6:00 pm (UTC+8)