6-core High-Purity Oxygen-Free Copper Braided IEM Upgrade Cable
Transparent / Detailed / Natural-Sounding / Hand-Braided
TRN A3 6-core High-Purity Oxygen-Free Copper Braided IEM Upgrade CableTRN A3 6-core High-Purity Oxygen-Free Copper Braided IEM Upgrade Cable

Twice the thickness of traditional wire

Redefining sound quality
Increment in core-count and cable gauge gives better resolution, fuller sound, clarity and transparency, improved stereo-imaging, soundstage, and spatial depth.
6-core OFC braided cable
6-core OFC braided cable 4.5mm diameter
Approximately 4.5mm diameter
*Cable thickness may vary with production batch

Magnesium alloy active chin-slider

Improved ergonomics
TRN A3 has an active chin-slider for improved wearing stability and reduces microphonic noise.
Magnesium alloy active chin-slider
TRN A3 Magnesium alloy active chin-slider
TRN Logo
TRN A3 cable black on dark background

How does high-purity oxygen-free copper benefit sound quality?

Bring your favorite earphones to the next level with improved tonal accuracy and realism. Thanks to the TRN A3 cable, your music will sound richer, more balanced, and transparent.
TRN A3 cable black on light background

The beauty is in the braids

Hand-braided to perfection for the discerning taste.
Close view on braided cable

Memory ear-hooks

TRN A3 reduces microphonic noise significantly.
TRN A3 memory ear-hooks

Maximum compatibility with 3.5mm TRS stereo jack

TRN A3 cable is compatible with most audio devices, laptops, PCs, mainstream smartphones, and tablets.
TRN 3.5mm TRS stereo jack
Mobile phone

Gold-plated 2-pin connectors

TRN A3 cable is compatible with all TRN earphones (except TRN H1 and all TRN Bluetooth earpieces) and most mass-market earphones.
0.75mm, 0.78mm, and MMCX gold-plated 2-pin suitable for most earphones with detachable cable. More than 5,000 times insertion tests to ensure perfect contact every time.
TRN A3 0.75mm 2-pin connectors
0.75mm 2-pin connectors
TRN A3 0.78mm 2-pin connectors
0.78mm 2-pin connectors
TRN A3 MMCX 2-pin connectors
MMCX 2-pin connectors


Product name:
Product type:
6-core High-Purity Oxygen-Free Copper braided earphone cable
Cable geometry:
84 microfilaments into 14 strands per core, total 6 cores, criss-cross braid
2Pin connectors:
0.75mm, 0.78mm and MMCX
Auxiliary connector:
3.5mm gold-plated TRS(Tip-Ring-Sleeve) stereo jack
Over-ears with memory hooks and chin-slider
Cable length:
1.2 meters
* Actual product specifications may vary, and all features, functionality, and other product specifications are subject to change without notice or obligation.


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)