Free worldwide shipping over USD 250 Handmade in Singapore since 2008 Fits 400+ IEMs

Istana Graphene Coated Copper Hybrid Headphone/IEM Cable

Istana is a graphene-coated monocrystalline copper cable with a conductivity rate above 110% IACS. Cryogenically treated, with 70 conductor strands at 24 AWG and tuned for sensitive IEMs, it brings clarity, detail and dynamic range, and its graphene coating resists oxidation and corrosion.

  • Graphene-coated copper
  • >110% IACS
  • 70 strands
  • 24 AWG
Bass9.1Mids9.3Treble9.6Stage9.5Detail9.8
Configure your cable

Choose your earphone connector and options below.

  • Built to orderShips in about 1 week
  • 14-day returnsStandard builds · conditions apply
  • 1-year warrantyOn every cable
  • Handmade in SingaporeChat and phone support

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One of the world’s most conductive cables.

Istana

One of the world’s most conductive cables.

Graphene-coated monocrystalline copper with a conductivity rate above 110% IACS, cryogenically treated and tuned for sensitive IEMs.

  • 110%+ IACS conductivity
  • 70 Conductor strands
  • 24 AWG Wire gauge
  • 26 g Weight
Graphene-coated copper conductor

Construction

Graphene-Coated Copper

Istana pairs high-quality copper with a graphene coating for a conductivity rate above 110% IACS, higher than conventional silver or copper.

Less signal loss means more clarity, detail and dynamic range.

IEM Matching

Made for Sensitive IEMs

Precision-tuned for sensitive IEMs, for a cohesive, synergistic sound with minimal phase distortion.

Built to Last

Oxidation Protection

Built to Last

The graphene coating naturally resists oxidation and corrosion and adds durability, for long-lasting performance and reliable connections.

Story

The Story of Istana

Istana means palace in Malay and Indonesian, and is the name of the official residence and office of the President of Singapore: a neo-Palladian landmark at the foot of Mount Sophia, with a central three-storey tower rising 28 metres above its gardens, the Domain.

Istana is a graphene-coated monocrystalline copper cable with a conductivity rate above 110% IACS. Cryogenically treated, with 70 conductor strands at 24 AWG and tuned for sensitive IEMs, it brings clarity, detail and dynamic range, and its graphene coating resists oxidation and corrosion.

Sound Guide

Graphene-coated copper with a conductivity above 110% IACS: clear, detailed and dynamic, with copper weight underneath.

Ratings are Null Audio’s listening notes, out of 10.

  1. Treble 9.6 out of 10
  2. Mid 9.3 out of 10
  3. Bass 9.1 out of 10
  4. Bass Depth 8.9 out of 10
  5. Imaging 9.5 out of 10
  6. Headroom 9.8 out of 10
  7. Detail Retrieval 9.8 out of 10
Ready for daily carry

In the box

Ready for daily carry

  • Istana cable Your length and connector
  • Premium leather pouch For daily carry

Craft and care

Introducing FlexiPlug

Introducing FlexiPlug

The FlexiPlug is a multi-connection system, enabling users to switch to adequate connectors for their IEMs.

Currently supporting 2PIN, IE300, A2DC, IPX, Pentaconn Ears and QDC 2PIN.

Build Note

Build Note

Designed, handcrafted and shipped from Singapore.

Built-to-order. Lead time around 1 week.

Ear guide (~10cm) is installed by default for commonly used IEM connectors (e.g. 2PIN, MMCX, IPX). Let us know if your IEM/headphone is modified or needs extra customization.

Caring for Your Cable

Care

Caring for Your Cable

Coil it loosely in large loops and keep it in the included leather pouch when you’re on the move.

Unplug by holding the connector, not the cable, and avoid sharp bends right at the plugs.

Wipe it with a soft, dry cloth, and keep it away from solvents and alcohol-based cleaners.

Every cable has a 1-year warranty. If anything goes wrong, contact us and we’ll take care of it.

Specifications

Technical details

Cable
Conductor Material
Graphene Coated UPOCC Copper
Wiring
24 AWG
Length
1.2 m standard; 1.5, 1.8, 2.0, 2.5 or 3.0 m in the configurator
Weight
~26g
Hardware
Symphonym Chrono Anodized Series
Solder
WBT Silver Solder
Pin contact
High Precision Fabrication, 24k gold plated
Protection
Graphene coating resists oxidation and corrosion
Compatibility
Earphone and headphone connectors
FlexiPlug (switchable 2-pin, IE300, A2DC, IPX, Pentaconn Ear, QDC 2-pin), 2-pin 0.78 mm, Flat 2-pin 0.78 mm, MMCX, A2DC, IPX, A2DC (headphones), Beyerdynamic T1 / T5p, Etymotic ER4P / ER4B / ER4S, Etymotic ER4SR / ER4XR, FitEar, Focal Utopia, Sennheiser IE 40 PRO, Sennheiser IE 8 / IE 80, Sennheiser IE 300 / IE 600 / IE 900, Sennheiser IE 500 PRO, Sennheiser HD 59X, Sennheiser HD 600 / HD 650, Sennheiser HD 700, Sennheiser HD 800, JH Audio (with bass control), Mini XLR 3-pin, Mini XLR 4-pin, Sony IER-Z1R, Shure SRH1540 / SRH1840, Sony MDR-EX1000, Sony XBA-A / XBA-Z series, UE / UM / QDC legacy 2-pin, KZ C-pin 0.75 mm 2-pin, KZ / 64 Audio 0.75 mm flat 2-pin, Ultimate Ears TripleFi 10
Player plugs
3.5 mm, 3.5 mm right-angle, 4.4 mm balanced, 2.5 mm balanced, 3-pin XLR (pair), 4-pin XLR, 6.35 mm, Lightning DAC, USB-C DAC (Realtek ALC5686), USB-C DAC (ESS ES9280C)
Service
Warranty
1 year
Returns
Standard builds: 14 days from delivery, unused and in original packaging; 30% restocking fee, shipping not refunded. Custom spec, length or connector builds: no change-of-mind returns once production starts. Defects are covered by the warranty.
Made in
Singapore, built to order

Find the right connector for your earphones

Customer reviews

Rated 5.0 out of 5 from 1 reviews.

  • 5 out of 5 · Anton · 2024-08-07

    Absolute Audio Marvel

    I was given the opportunity of a test go at this cable at Null's office b4 its official release. Coupled with my IE900, the combination is a marvel to behold with. I like the richer texture of the treble details and wonderful headroom presenation. It is expansive and 3D like. Will definitely purchase one on its release!

Questions

Good to know

How long until it ships?

Every Istana is built to order by hand in Singapore. Lead time is around 1 week.

Will it fit my earphones?

Choose your connector when you order. FlexiPlug lets you switch between 2PIN, IE300, A2DC, IPX, Pentaconn Ears and QDC 2PIN. If your earphones are modified or need a custom fit, contact us before ordering.

Find the right connector for your earphones

Can I get a different length?

Yes. Choose Cable length in the configurator above: 1.2 m is standard, and 1.5, 1.8, 2.0, 2.5 and 3.0 m are available at an extra cost, shown before you add to cart.

For any other length, contact us or WhatsApp +65-8731-5476.

Will the conductor oxidise or discolour?

Istana’s graphene coating naturally resists oxidation and corrosion, for long-lasting performance.

What is the return policy?

Standard builds can be returned within 14 days of confirmed delivery if unused and in their original packaging. Change-of-mind returns carry a 30% restocking fee, and shipping is not refunded.

Custom spec, length or connector builds cannot be returned for a change of mind once production starts. Faults are a different matter: every cable has a 1-year warranty, so contact support@null-audio.com and we will assess it.

Read the full return policy