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

Hakone MKIII UP-OCC Cryo Silver/Copper Headphone/IEM Cable

Hakone MKIII combines cryogenically treated monocrystalline 7N silver and copper, 1.5 times larger in cross-section than the previous generation, for smooth treble, layered staging and warm, impactful bass.

  • 7N silver/copper hybrid
  • Cryogenic treated
  • 24 AWG
  • ≈26 g
  • Ocean Blue NL4
Bass9.3Mids9.5Treble8.9Stage9.6Detail9.5
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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The better of both worlds.

Hakone MKIII

The better of both worlds.

Monocrystalline 7N silver and copper, cryogenically treated, for smooth treble, layered staging and warm, impactful bass.

  • 7N Monocrystalline silver and copper
  • 1.5× Larger single strand than the previous generation
  • 24 AWG Wire gauge
  • 26 g Weight
Monocrystalline Silver/Copper Hybrid

Construction

Monocrystalline Silver/Copper Hybrid

UPOCC monocrystalline 7N silver and copper, 1.5 times larger in cross-section than the industry standard, cryogenically treated to reduce residual stress and resistance.

The Better of Both Worlds

Sound

The Better of Both Worlds

Hakone brings accuracy and richness together: smooth treble, layered staging, and warm, impactful bass.

Ocean Blue Hardware

Ocean Blue Hardware

Premier CNC fabricated NL4 hardware in Ocean Blue with rhodium electroplating.

Hakone MKIII combines cryogenically treated monocrystalline 7N silver and copper, 1.5 times larger in cross-section than the previous generation, for smooth treble, layered staging and warm, impactful bass.

Sound Guide

How Hakone MKIII rates for treble, mids, bass, bass depth, imaging, headroom and detail retrieval. Use it to match the cable to your earphones and source.

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

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

In the box

Ready for daily carry

  • Hakone MKIII 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
UPOCC monocrystalline 7N copper/silver
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
NL4 - Ocean Blue
Solder
NA Custom 10% Silver Solder
Pin contact
High precision fabrication, 24k gold plated
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
2.5 mm balanced, 3.5 mm, 3.5 mm right-angle, 4.4 mm balanced, 3.5 mm balanced, 3-pin XLR (pair), 4-pin XLR, 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 4.8 out of 5 from 20 reviews.

  • 5 out of 5 · Patrick · 2025-08-20

    Really enhances my iems in a well tounded way Cables make a real difference despite what one hears otherwise

  • 5 out of 5 · Bjorn B. · 2025-01-28

    Exceptional Cable

    I now have both the 4W and 8W Hakone running my UM Fusang's. The 8W does take it to another level but both are exceptional and I have tried countless cables many of which were multiple $$$ of these cables. Holographic presentation with deep, tight bass - amazing vocals - air for days and great extension without getting bright. What more can you ask for....

  • 5 out of 5 · James · 2025-01-15

    I’m impressed as usual. You guys always deliver. Love the headphone cables!

  • 5 out of 5 · Bjorn B. · 2025-01-01

    Amazing!

    My UM Fusang's are very source sensitive and the Hakone turns out to be the perfect match after trying many others from copper to silver/gold. Incredible detail/air, deep tight bass, well defined, natural vocals - the Fusang's are now performing to their promise. Thanks!

  • 5 out of 5 · Yiyang H. · 2024-12-19

    Null Audio never fails

    Cable is awesome and looks very beautiful. Sound quality is superb. This has been the third cables I purchased and Null Audio never disappointing me. Great work and keep it up!

  • 5 out of 5 · Sim C. · 2024-06-18

    Symphonym-Hakone MKIII UP-OCC Cryo Silver/Copper Headphone/IEM Cable

    It was delivered very fast, thank you. Quality looks very good. Have not used it yet as I am still waiting for th delivery of my custom IEM

Questions

Good to know

How long until it ships?

Every Hakone MKIII 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.

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