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Compatibility guide

7Hz Salnotes Zero replacement and upgrade cables

Replacement and upgrade cables for the 7Hz Salnotes Zero and Zero:2, handmade to order in Singapore from USD 49 and shipped worldwide with FedEx (free from USD 250).

The 7Hz Salnotes Zero and the newer Zero:2 have detachable 0.78 mm 2-pin sockets, so any of our cables fits them. Choose Standard 2-pin (0.78 mm) under Headphone connection, then the plug for your player: 3.5 mm, 4.4 mm balanced, or a USB-C cable with a built-in DAC for your phone. Every cable is handmade to order in Singapore and ships worldwide with FedEx.

Cables

Cables you can order with this connector

Every cable below offers standard 2-pin under Headphone connection.

Lune Series MKIX Premium Upgrade Cable for Headphone | IEM

Headphone connection: Standard 2-pin (0.78 mm)

 From £114.00 Tiburon MKV UP-OCC Cryo Copper Headphone/IEM Cable

Headphone connection: Standard 2-pin (0.78 mm)

 From £152.00 Arete Series MKVI Premium Upgrade Cable for Headphone | IEM

Headphone connection: Standard 2-pin (0.78 mm)

 From £84.00 Thera MKV UP-OCC Cryo Silver Headphone/IEM Cable

Headphone connection: Standard 2-pin (0.78 mm)

 From £304.00 Brevity Pro 5N CGOCC-A Copper Earphone Cable

Headphone connection: Standard 2-pin (0.78 mm)

 From £38.00 Ethos Ultra Coaxial Upgrade Cable for IEM | Headphone

Headphone connection: Standard 2-pin (0.78 mm)

 From £68.00 Hakone MKV UP-OCC Cryo Silver/Copper Headphone/IEM Cable

Headphone connection: Standard 2-pin (0.78 mm)

 From £228.00 Aoraki MKIV Gold Silver Tri-Hybrid Headphone/IEM Cable

Headphone connection: Standard 2-pin (0.78 mm)

 From £533.00 Nyx3 Wireless IEM Cable · Qualcomm QCC5181

Headphone connection: Standard 2-pin (0.78 mm)

 From £68.00 Epsilon MKIII Premium Upgrade Cable for Headphone | IEM

Headphone connection: Standard 2-pin (0.78 mm)

 From £99.00 Istana MKII Graphene Coated Copper Hybrid Headphone/IEM Cable

Headphone connection: Standard 2-pin (0.78 mm)

 From £837.00 Vanda 7N UP-OCC Cryo Copper Headphone/IEM Cable

Headphone connection: Standard 2-pin (0.78 mm)

 From £190.00 Ethos MKVII Silver-Plated Copper IEM Cable

Headphone connection: Standard 2-pin (0.78 mm)

 From £68.00

Quick facts

Connection

Null Audio standard 0.78 mm 2-pin IEM cable plug
Our Standard 2-pin (0.78 mm) plug, the option to choose for the Salnotes Zero.
Salnotes Zero socket

0.78 mm 2-pin, detachable

Retailer listinglinsoul.com: 7Hz Salnotes Zero
Zero:2 socket

0.78 mm 2-pin, detachable

Retailer listinglinsoul.com: 7Hz Zero:2
Option to choose

Standard 2-pin (0.78 mm). It fits recessed and flat 0.78 mm sockets.

Null AudioNull Audio

Models

Which option for each model

The option to choose for the Salnotes Zero and Zero:2. Other 7Hz models are in the Truthear, Kiwi Ears and chi-fi guide.

Zero:2 (2024)

Choose Standard 2-pin (0.78 mm). 2-pin 0.78 mm.

Retailer listinglinsoul.com
Salnotes Zero (2022)

Choose Standard 2-pin (0.78 mm). 2-pin 0.78 mm.

Retailer listinglinsoul.com

Ordering

How to order

  1. Pick a cable from the list below.
  2. Under Headphone connection, choose Standard 2-pin (0.78 mm).
  3. Choose the player plug that matches the output you use most; see choosing the player plug.
  4. Not sure which socket your earphone has? Send us the model and a close photo of the socket before you order.

Before you order

Check your earphone

  • Match the marked side of the plug to the marked side of the socket. 2-pin polarity matters.

Questions

Common questions

Is a new cable worth it on a budget IEM like the Zero?

Many owners replace the thin stock cable with one that handles and lasts better, or to get a 4.4 mm balanced plug or a USB-C plug. Our cables start from USD 49.

Can I add a microphone?

Yes. See our cables with a mic for gaming and calls.

Can I use the Zero with my phone?

Choose the USB-C DAC plug: the cable has its own DAC, so it plugs straight into a USB-C phone.

Keep reading

More guides

Find a cable for my IEM

Search 400+ earphones by brand or model.

 IEM connectors explained

2-pin, MMCX, IPX, A2DC and FlexiPlug.

 Choosing the player plug

3.5 mm, 2.5 mm, 4.4 mm, XLR and USB-C.

 HIFIMAN Sundara

Choose Dual 3.5 mm.

 Focal Clear, Clear MG

Choose Dual 3.5 mm.

 Sony headphones

Z1R, Z7: Dual 3.5 mm. 1A, M1ST, MV1, M1: Single 3.5 mm.

 Moondrop Chu 2

Choose Standard 2-pin.

 Shure SE215

Choose MMCX.

 Truthear Hexa

Choose Standard 2-pin.

 KZ ZS10 Pro, ZSN Pro X, EDX Pro, Castor

Choose KZ C-pin 0.75 2PIN, or the flat plug for flat sockets.

 Sennheiser HD 600 / HD 650

Choose Sennheiser HD600/650.

 Sennheiser HD 560S / HD 5x9

Choose Sennheiser HD 5x9.

 Sennheiser HD 800 / HD 800 S

Choose Sennheiser HD800.

 LETSHUOER S12, Ember, Astralis

Choose Standard 2-pin.

 Truthear Gate, Hola

Choose Standard 2-pin.

 Moondrop Starfield, Starfield II

Choose Standard 2-pin.

 Sennheiser IE 200 / IE 300 / IE 600 / IE 900

Choose IE300/600/900. Recessed MMCX socket.

 Sennheiser IE 40 PRO / IE 400 PRO / IE 500 PRO / IE 80

Each has its own option, not standard MMCX.

 Sony IER-Z1R / IER-M9 / IER-M7 / XBA

IER-Z1R: choose Sony IER-Z1R. IER-M7: MMCX.

 Etymotic ER4SR / ER4XR / ER4P / ER2

ER4SR/XR: keyed MMCX. Older ER4P/B/S: own option.

 Shure SE846 / SE535 / SE215 / AONIC

Standard MMCX.

 64 Audio

Universals: Flat 2-pin. Aspire: IPX. Customs: IPX or Flat 2-pin, matching your socket.

 JH Audio

4-pin: JH w Bass Control. 7-pin: JH 7-pin.

 Westone MACH / Pro X

T2 socket: choose IPX. Older W and UM Pro: MMCX.

 Ultimate Ears (UE)

Current customs and UE 150–350: IPX. Older 2-pin and SL: UE/UM/QDC 2PIN Legacy.

 Campfire Audio

Most models: MMCX. Andromeda 10, Chimera: 2-pin.

 Audio-Technica

Choose A2DC. IM series: plug on request.

 AAW (Advanced AcousticWerkes)

Choose Standard 2-pin. Nebula One: fixed cable.

 Moondrop

Choose Standard 2-pin. Original CHU: fixed cable.

 qdc and CCA

KZ, CCA: KZ C-pin 0.75 2PIN or KZ / 64 Audio 0.75 Flat 2PIN. qdc: UE/UM/QDC 2PIN Legacy.

 Truthear, Kiwi Ears, Simgot and more

Most: Standard 2-pin. Some: MMCX.

 Empire Ears

Choose Standard 2-pin.

 Vision Ears

Choose Standard 2-pin.

 Noble, UM, FiR, Softears, Symphonium, Elysian

Most: Standard 2-pin. Elysian: FlexiPlug.

 JOMO Audio

Choose Standard 2-pin.

 Dunu

Most: MMCX. Some: 2-pin.

 FiiO

Choose MMCX.

 final

Choose MMCX.

 beyerdynamic

DT PRO: Mini XLR 3PIN. T1, T5: Beyer T1/T5P.

 HIFIMAN

Most: Dual 3.5 mm. HE1000, early HE400i: Dual 2.5 mm.

 Audeze

Choose Mini XLR 4PIN.

 Focal

Most: Dual 3.5 mm. Utopia: Focal Utopia.

 4.4 mm balanced cables

Every cable with a 4.4 mm plug, and which FiiO players take one.

 2-pin IEM cables

0.78 mm, recessed or flat: Standard 2-pin.

 MMCX IEM cables

Shure, Campfire, FiiO, final, Dunu: MMCX.

 IPX IEM cables

64 Audio Aspire, UE customs, Westone T2: IPX.

 KZ

Raised socket: KZ C-pin 0.75 2PIN. Flat: KZ / 64 Audio 0.75 Flat 2PIN.

 Extension cables

3.5 mm and 4.4 mm extensions, or a longer cable up to 3 m.

 USB-C IEM cables

A DAC in the plug, for phones and laptops. Lightning too.

 IEMs for gaming

A mic cable turns your IEMs into a headset.
Interconnect cables

XLR, RCA, 3.5 mm, 4.4 mm and USB, 10 cm to 2 m.

 Visit our Singapore studio

76 Playfair Road. Auditions, ear impressions, pickup.

 Sony Walkman

WM1, ZX, DMP-Z1: 4.4 mm. A series: 3.5 mm.

 AKG N40 / N5005 / K712

N40, N5005: IE300/600/900. K712, K702, K371: Mini XLR 3PIN.

 4.4 mm balanced vs 3.5 mm

Is balanced worth it? Power, output impedance and when it matters.

 Best cables for Sennheiser IE 600

Our picks for IE 600, IE 300 and IE 900.

 Best IEM cables under $100 / $200

Our picks, and every cable in each band compared.

 2-pin vs MMCX vs IPX

How they compare in use, what wears and how to tell them apart.

Sources

Sources

  1. linsoul.com: 7Hz Salnotes Zero 0.78 mm 2-pin.
  2. linsoul.com: 7Hz Zero:2 0.78 mm 2-pin.
  3. Null Audio configurator, Headphone connection Options offered on each cable. Snapshot 16 Oct 2026.

Prepared 17 Oct 2026. Not yet reviewed by Null Audio.

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