Free worldwide shipping Free FedEx Priority over USD 250 Handmade in Singapore since 2008

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

Hakone MKV 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 MKV

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 MKV 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 MKV 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 MKV 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; any length from 50 cm to 3 m in 2 cm steps 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

  • 5 stars: 18 (90%)
  • 4 stars: 1 (5%)
  • 3 stars: 0 (0%)
  • 2 stars: 1 (5%)
  • 1 star: 0 (0%)
j
jihoo k. (Seoul, KR)
Good cables

The staging is also wide, the sense of hitting the bass, the sweet vocal, the cool highs The overall density is very good and bright. The build quality of the product is also excellent
very good

P
Patrick

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

B
Bjorn B. (Chicago, US)
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....

J
James

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

B
Bjorn B. (Kansas City, US)
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!

Y
Yiyang H. (Burnaby, CA)
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!

B
Brad (Cypress, US)
Pairing with ie900

I purposely bought this cable to mitigate somewhat recessed mid range for ie900. I got this great idea from one of the reviewers on this page mentioning that the cable makes the sound signature inverted V shape, which is actually perfect fit to counteract against recessed mid of ie900, well, at least theoretically. So I hooked Hakone up and compared against the stock cable for ie900. I do feel that it ever so slightly opens up the sound but I am not too sure about boosting the mid. My conclusion is that I should tame the expectations on custom cables, as such that the difference is very minute and nuanced, and it cannot overcome the intrinsic sound signature of the IEM/headphones. Nonetheless, I am certainly enjoying tad bit wider sound stage it gives. More than anything, the cable looks great and comfort is top notch.

S
Sim C. (Hong Kong, HK)
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

R
Robin W. (Duvall, US)
Awesome cable!

I’ve had problems with getting Mmcx cable that fits my IE600’s. Not only does this fit perfectly, but has a great sound, and no microphonics. Highly recommended!

匿
匿名 (Ōtsu, JP)
Powerful low range and clear mid-highs

It brings me powerful bass due to the use of copper cables and clear high range due to the use of silver cables

D
Daniel B. (Staten Island, US)
Symphonym-Hakone MKIII UP-OCC Cryo Silver/Copper Headphone/IEM Cable from our

The cable is gorgeous and sturdy. It opens up the sound a bit more on my AAW Nightingale planar iem and brings out the treble.

J
John (Brookings, US)
There is a difference - Hakone

Have been using the Lune cable from Null-Audio and took the chance to do an upgrade when there was an offer on the Hakone. Was looking for something that would really take advantage of the low end drivers for my UE Live CIEMs and the Hakone didn’t disappoint. Yes, there was a difference in the low end and bit more headroom when I compare it. Now it sounds a lot closer to my Studio Monitors that I’ve grown used to doing my studio mixes and using it live with the UE has been an even better experience from the Lune series (not that it’s bad, just a tad more open) Using the Lune now on my backup pair of Unique Melody CIEMs and got the best of both worlds.

F
Fred (Nakano, JP)
Very solid quality

Very pleased with this cable, using it with Hifiman Arya/Susvara. I like the ergonomic and the clear sounds it has. Good value for such quality

S
SE H.P. (Guri-si, KR)
Hakone 4.4 with My Canary

I used a Dap AK Khan alpha.

Surpringly, 4.4 balanced Hakone expressed the sound clearly with Canary.

Very Good, ever before

R
Robert F. (Whiting, US)
Hakone cable

As always my orders are met with great service. The build quality of this cable is exceptional. It has truly improved the overall sound of my Noble Kaiser Encores.
Thanks
Bob F

우
우혁 김. (Eunpyeong-gu, KR)
가성비 아주 좋습니다.

브랜드 케이블들 중 이 가격에 이정도 퀄리티와 굵기의 케이블을 구하긴 어려울 것 같습니다. 강력 추천드립니다.

Y
Yasunobu O. (Osaka, JP)
Excellent product

I am very pleased with the cables

p
pcj
good cable

The making is as beautiful as the other models.
I felt the sound quality was the same as the impression I received from the specs.
I think the cost performance is high compared to similar cables from other companies.

L
Leck H. (Central, HK)
High Quality Build

Very High Quality and beautiful Build, premium sound quality with fair price.

K
KING (Central, HK)
nicely built but the sound signiture is very odd

The cable is really nicely built and looks stunning, yet the sound signiture is very odd and different from other copper silver hybrid cables,e.g. EA ErosII.
In brief, it is strongly inverted V shape, the vocal is very close to the ear, but the other ranges are all recessed. It is simply not what I expected, but may be someone may like this exceptional sound signiture ....

B
Bruno

Hello,
I would like to purchase this cable in 2.5mm TRRS to 2 3.5 jacks (for a hifiman Audivina).
I don't see plain 3.5 jacks in the configurator, will Beyer T1/T5 do the trick or will the custom Beyerdynamic locking mechanism get in the way?

Thank you for your help!

Regards,
Bruno

Null Audio

Beyer T1/T5p is the same plug as our Dual 3.5 mm option, which Hakone offers (+USD 20). Choose Dual 3.5 mm if the Audivina has a 3.5 mm socket on each cup, and 2.5 mm balanced under Stereo connection.

S
Sho H.

I'm currently using Unique Melody Mentor V3 which has UM4pin connector and would like to know if you offer UM4pin option.
Thank you.

Null Audio

The UM 4-pin connector isn't in our configurator. Email a photo of the socket to support@null-audio.com and we'll check whether we can make it.

N
Nazeer ..

Hello,

I live in Bengaluru, India and I am looking to purchase a high quality upgrade cable for my Focal Clear Mg. Couple of questions I had:

1. Do you ship to India?
2. What is an "ear guide" that this page mentions?

Thanks.

Null Audio

thanks for your interest. we support international shipping to India via FedEx Express.
ear guide is the "J-shape" hook near 2pin connector, to fix cable over ear securely. kindly email us (support@null-audio.com) for more images.

T
Tze M.L.

May I know what's the main different between 4 wires vs. 8 wires braid cable? Sound signature? Design? Weight?

Null Audio

8-braid doubles the conductor, roughly halving the resistance. It is thicker and about 10–20 g heavier, so we recommend it for headphones and home use; 4-braid is more portable.

Questions

Good to know

How long until it ships?

Every Hakone MKV 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: set any length from 50 cm to 3 m in 2 cm steps. Up to the standard 1.2 m costs nothing extra; longer cables cost more, and the price is shown before you add to cart.

For a length over 3 m, 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