3.5mm to RCA Coaxial Digital Adapter Cable for FiiO X3, X5, X7 & X-Series DAPs

$70.00 $50.00
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Length: 1ft

1ft
3ft
5ft

Connector Type: TRRS

TRRS
TS
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Total price:$120.00 $95.00
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The Sound of Excellence

The Headgear Audio 3.5mm to RCA Coaxial Digital Adapter Cable is purpose-built for FiiO digital audio players (DAPs) — including the X1, X3, X3II, X5, X5II, X5III, X7, and X7II — that output a digital coaxial signal through their 3.5mm port. Handcrafted in India with gold-plated connectors and a precision-wound PVC jacket, this cable lets you feed that digital signal straight into any RCA coaxial DAC or amplifier.

This is a digital coaxial adapter — not an analogue line-out cable. It carries the S/PDIF bitstream from your FiiO player's 3.5mm coaxial output into the RCA coaxial input of your home or desktop DAC, bypassing your FiiO's internal DAC chip entirely. The result: bit-perfect digital audio with no re-sampling or signal loss, letting your separate DAC do the decoding instead.

FiiO uses two different 3.5mm coaxial signal types across its X-series lineup — TRRS on the X3II, X5II, X7, X5III, and X7II, and TS on the original X3 and X5. Select the correct source variant above so your cable matches your specific player.

Available in three lengths — 5ft, 10ft, and 15ft — to suit desktop stacks or longer rack-to-source runs. Each cable ships with a 6-month manufacturer's warranty against defects.

Specifications

Technical details for the 3.5mm to RCA Coaxial Digital Adapter Cable

Connector A
3.5mm (TRRS or TS coaxial out)
Connector B
RCA (coaxial in)
Signal type
S/PDIF Digital Coaxial
Plating
24K Gold-plated contacts
Jacket
PVC — flexible, low-crosstalk
Lengths available
1ft · 3ft · 5ft
Impedance
75Ω nominal
Warranty
6 months (manufacturing defects)
This is a digital coaxial cable. Your FiiO player must support coaxial digital output via its 3.5mm port — confirm this in your model's manual before ordering.

Compatible FiiO models

Select the correct source variant at checkout based on your exact FiiO model below.

FiiO X3II
3.5mm TRRS coaxial out
FiiO X5II
3.5mm TRRS coaxial out
FiiO X7 / X7II
3.5mm TRRS coaxial out
FiiO X5III
3.5mm TRRS coaxial out
FiiO K5 Pro
RCA coaxial input
FiiO X3 (original)
3.5mm TS coaxial out
FiiO X5 (original)
3.5mm TS coaxial out
Other DACs
Any RCA coaxial input
Important: The X3/X5 (original) use a 3-pole TS coaxial output, while the X3II and later models use a 4-pole TRRS coaxial output. These are not interchangeable — ordering the wrong variant will not work with your player.

Why Headgear Audio

Handcrafted audiophile cables, made with care in Pune, India

Handcrafted in Mumbai.
Every cable is assembled by hand in our Pune workshop — not mass-produced.
Gold-plated connectors
24K gold plating on both connectors for corrosion-free, low-loss signal transfer.
Audiophile-first
Designed specifically for high-end DAC/amp pairings, not generic consumer use.
6-month warranty
Manufacturer's warranty on all manufacturing defects. Invoice required to claim.

Frequently asked questions

Everything you need to know before buying