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Nyx2 Wireless IEM Cable · Qualcomm QCC5181

Nyx2 turns your in-ear monitors wireless. Qualcomm’s QCC5181 brings Bluetooth 5.4, LDAC and aptX Adaptive up to 24-bit / 96 kHz, aptX Lossless on Snapdragon Sound phones and LE Audio. Up to 20 hours per charge, 25 m of range, and just 15 g.

  • Qualcomm QCC5181
  • Bluetooth 5.4
  • LDAC
  • aptX Lossless
  • LE Audio
  • 20 h playback
  • 15 g
Configure your cable

Choose your earphone connector below.

  • In stockShips in 1–3 days
  • 14-day returnsStandard builds · conditions apply
  • 1-year warrantyOn every cable
  • Singapore-basedChat and phone support

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Your IEMs, unplugged.

Nyx2

Your IEMs, unplugged.

Our second-generation Bluetooth cable, rebuilt around Qualcomm’s flagship QCC5181: newer Bluetooth, more processing and codecs up to lossless, at the same 15 g you forget you are wearing.

  • 5.4 Bluetooth, on Qualcomm QCC5181
  • 96 kHz 24-bit LDAC and aptX Adaptive
  • 20 h Playback per charge
  • 15 g Total weight
Qualcomm QCC5181 Inside

Platform

Qualcomm QCC5181 Inside

Nyx2 runs on Qualcomm’s QCC5181, the flagship of its S5 Gen 2 audio platform. Two Kalimba audio DSP cores (up to 240 MHz) and a separate application processor handle decoding, calls and power at the same time.

It is qualified to Bluetooth 5.4 and stays backward compatible with older phones, tablets and players.

Hi-Res, Up to Lossless

Codecs

Hi-Res, Up to Lossless

LDAC and aptX Adaptive both stream at up to 24-bit / 96 kHz, and aptX Adaptive adjusts to the connection, so music stays smooth when the air gets busy. On phones with Snapdragon Sound, aptX Lossless carries CD-quality 44.1 kHz audio without compression.

aptX HD, aptX, AAC for iPhone and SBC are all supported, so every source plays at its best.

Ready for LE Audio

Next-Generation Bluetooth

Ready for LE Audio

QCC5181 adds Bluetooth LE Audio: efficient LC3 streaming and a low-latency gaming mode, ready for the next generation of phones and tablets. With older devices, Nyx2 uses classic Bluetooth as usual.

Calls That Sound Like You

Voice

Calls That Sound Like You

Qualcomm cVc echo cancellation and noise suppression clean up your voice on calls. The in-line remote handles volume, track skip, playback, calls and your voice assistant without reaching for your phone.

Light Enough to Forget

Comfort

Light Enough to Forget

At 15 g with pre-formed ear hooks, Nyx2 sits comfortably through a full day. Up to 20 hours of playback per charge and up to 25 m of range take it from the commute to the studio.

Compare

Nyx2 vs Nyx+

Nyx2 replaces Nyx+. Most reviews on this page were written for Nyx+.

Nyx2 vs Nyx+
FeatureNyx2Nyx+
PlatformQualcomm QCC5181Previous generation
Bluetooth5.45.3
LosslessaptX Lossless (Snapdragon Sound phones)—
Hi-res codecsLDAC, aptX Adaptive (up to 24-bit / 96 kHz), aptX HDLDAC, aptX Adaptive, aptX HD
LE AudioYes—
RangeUp to 25 mUp to 15 m
CallsQualcomm cVcQualcomm cVc
PlaybackUp to 20 hoursUp to 20 hours
Weight15 g15 g
Ready to pair

In the box

Ready to pair

  • Nyx2 Bluetooth cable 58 cm, your connector
  • USB-C charging cable Use a 10 W (5 V / 1 A) charger or less
  • Storage pouch For daily carry

Craft and care

Battery

Charging

Turn Nyx2 off, then charge it with the included USB-C cable from a computer or a charger rated 10 W or less, for example 5 V / 1 A. High-power fast chargers can damage the battery.

The light is red while charging and turns blue when Nyx2 is full, after about 2 hours.

Earphones in the photos are for illustration only and are not included.

Care

Caring for Your Cable

Coil it loosely in large loops when you store it.

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

Wireless
Bluetooth chip
Qualcomm QCC5181
Bluetooth
5.4, backward compatible with earlier versions
Codecs
LDAC, aptX Lossless (Snapdragon Sound), aptX Adaptive (up to 24-bit / 96 kHz), aptX HD, aptX, AAC, SBC
LE Audio
LC3; low-latency gaming mode
Range
Up to 25 m (82 ft)
Audio and calls
Audio processor
Dual-core Qualcomm Kalimba DSP, up to 240 MHz
Amplifier
Class D
Calls
Qualcomm cVc echo cancellation and noise suppression
Controls
In-line remote: volume, track skip, play/pause, calls, voice assistant
Power
Playback
Up to 20 hours per charge
Charging
USB-C, about 2 hours to full; use a charger of 10 W or less (5 V / 1 A)
Cable
Length
58 cm
Weight
15 g
Earphone connector
Chosen in the configurator: 2PIN (default), MMCX, Sennheiser IE300/600/900, IPX, A2DC, Etymotic ER4P/B/S, Etymotic ER4SR/XR, FitEar, Sennheiser IE80, Sony IER-Z1R, Sony MDR-EX1000, Sony XBA-A/Z, UE TF10, UE/UM/qdc 2PIN legacy, KZ C-pin 0.75 mm 2PIN, KZ/64 Audio 0.75 mm flat 2PIN
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.
Shipping
In stock, ships in 1–3 days

Reviews below include the previous generation, Nyx+.

Customer reviews

Rated 4.4 out of 5 from 78 reviews.

  • 5 out of 5 · Fran H. · 2026-06-26 · Reviewed: Nyx+ BT5.3 Wireless In-Ear Monitor Cable

    Quality Cable

    Needed a replacement Bluetooth cable for when I use my IEMs during my marathon mowing sessions 😂 This one got great reviews and lasts 4 times as long as my last one. Very happy with it!

  • 5 out of 5 · Adriano · 2026-04-11 · Reviewed: Nyx+ BT5.3 Wireless In-Ear Monitor Cable

    Nyx spettacolari

    Belle , leggere , grande suono , grande autonomia.

  • 5 out of 5 · Adriano · 2026-02-18 · Reviewed: Nyx+ BT5.3 Wireless In-Ear Monitor Cable

    Nyx spettacolari

    Belle , leggere , grande suono e grande autonomia.

  • 5 out of 5 · Josh B. · 2026-01-04 · Reviewed: Nyx+ BT5.3 Wireless In-Ear Monitor Cable

    Works well

    The cable works great. I use it when I work out with my IEM’s in. I like it a lot. The only suggestion I would make is for it to tell you the percentage of battery life left. That’s it. Everything else is perfect.

  • 5 out of 5 · KP · 2025-11-12 · Reviewed: Nyx+ BT5.3 Wireless In-Ear Monitor Cable

    Works well with 64audio A18s!

    Great sound quality extending the usability of my A18s CIEMs! Suggestions for improvement would be for a manual to be included with the item, better way to indicate successful Bluetooth connection and if possible for connection with multiple devices. Nevertheless still a 5-star item for the quality!

  • 5 out of 5 · Terence F. · 2024-11-21 · Reviewed: Nyx+ BT5.3 Wireless In-Ear Monitor Cable

    Good bluetooth cable with over 10+ hours battery life...

Questions

Good to know

Which phones play lossless?

aptX Lossless needs a phone with Snapdragon Sound and aptX Lossless support. Many other Android phones use LDAC, aptX Adaptive, aptX HD or aptX, and iPhone uses AAC; Nyx2 uses the best codec your phone offers.

Does it work with iPhone?

Yes. iPhone connects over AAC, with full in-line remote and call support. aptX codecs are not available on iPhone.

Will it fit my earphones?

Choose your earphone connector in the configurator above: 2PIN is the default, and MMCX, Sennheiser IE300/600/900, IPX, A2DC, Etymotic, FitEar, Sony, Ultimate Ears, KZ C-pin 0.75 mm 2PIN and KZ/64 Audio flat 0.75 mm 2PIN connectors are available.

Find the right connector for your earphones

What is LE Audio?

LE Audio is the newer Bluetooth audio standard, with the efficient LC3 codec and lower latency. It needs a phone or tablet that supports it; with older devices Nyx2 uses classic Bluetooth as usual.

How should I charge it?

Turn Nyx2 off, then charge with the included USB-C cable from a computer or a charger rated 10 W or less, for example 5 V / 1 A. High-power fast chargers can damage the battery. A full charge takes about 2 hours: the light is red while charging and blue when full.

How do I pair it and use the controls?

The first time you turn it on, Nyx2 goes into pairing mode by itself (the red and blue lights flash in turn). Choose Nyx2 in your phone’s Bluetooth settings. Every button and light is explained in the manual.

Download the Nyx2 manual (PDF)

How long does the battery last?

Up to 20 hours of playback per charge, depending on codec and volume.

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