I normally use 3.5mm - rca connect to my nw-zx300 so will it make differences if i move to the balanced output using the adaptor?

I gather that the NW-ZX300 also has a 4,4mm balanced output. This Gerika adapter however has a serious fault: three poles are electrically shorted so it can only function as an unbalanced adapter (unless Gerika have fixed the problem). This can easily be verified with any multimeter. Obviously the balanced output requires four separate electrical connections to your headphone: two cables to each "ear". To enjoy the balanced output you obviously need headphones with a balanced cable (4 poles/wires). Do not connect unbalanced headphones to a balanced output. If you fulfil those requirements, you also need a true balanced 4.4mm to 3.5mm adapter such as the "Meijunter 4.4mm (Male) to 3.5mm (Female) Balanced Cable Plug Adapter for Sony PHA-2A/iBasso/Fiio/HiFiman Headphones, Replacement Metal Cord Plug Line Jack Connector" in amazon.com. This correctly passes 4 poles from the male plug to the female socket.

Would this work to get 2.5mm balanced output from my es100 dac, for HiFiman Sundara w/ 3.5mm jack?

I believe the balanced outputs (on the DAC) are either 2.5mm or 4.4mm. Most ALSO have a 3.5mm jack. This adapter allows for use of standard 3.5mm headphones/ earbuds on 2.5mm outputs Adapters are available in most configurations. I would get an adapter for 4.4mm or 2.5mm ONLY. This particular adapter fits a 2.5mm output for 3.5mm audio connections. They won't make your 3.5mm output balanced.

Is the cable 2.5 balanced male to 3.5 balanced female or 3.5 unbalanced female?

This Geekria adapter is 2.5mm balanced male to 3.5mm balanced female.

Does this convert the output to balanced audio? Or just allow one to use balanced cables in a 3.5mm port? Is there a balanced audio benefit?

It only adapts. There is no balanced 3.5mm advantage.

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GEEKRIA 4.4mm to 3.5mm Balanced Headphones Adapter Converter for 3.5mm 4-Pole Cable to 4.4mm Player Device, Durable Aluminum Alloy Conversion Audio Plug, Gold Plated

GEEKRIA 4.4mm to 3.5mm Balanced Headphones Adapter Converter for 3.5mm 4-Pole Cable to 4.4mm Player Device, Durable Aluminum Alloy Conversion Audio Plug, Gold Plated

Product ID: 45741490

Details

Color
Silver
Connector Type
Auxiliary
Item dimensions L x W x H
1.97 x 0.31 x
Specific Uses For Product
Personal Audio

✨Gold-plated connectors for pristine audio

🔗4.4mm to 3.5mm balanced adapter

🛡️Durable aluminum alloy shell

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VT3549

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Details

Color
Silver
Connector Type
Auxiliary
Item dimensions L x W x H
1.97 x 0.31 x

Description

🎧 Elevate your audio game — don’t just listen, experience every note!

PREMIUM BUILD QUALITY - Crafted with a robust aluminum alloy shell and gold-plated connectors for durability and superior sound clarity.
COMPACT TRAVEL READY - Slim 5cm length and lightweight 5g design fits perfectly in your pocket or included PU leather pouch.
WIDE DEVICE COMPATIBILITY - Optimized for high-end DAPs like Sony NW-ZX507, FiiO M11, HIFIMAN R2R2000, and more — future-proof your audio setup.
ENHANCED LISTENING EXPERIENCE - Upgrade your soundstage with a reliable adapter that preserves balanced audio integrity for audiophile-grade performance.
SEAMLESS BALANCED AUDIO CONVERSION - Effortlessly connect 4.4mm balanced outputs to 3.5mm balanced headphones without signal loss.

The GEEKRIA 4.4mm to 3.5mm Balanced Headphones Adapter is a precision-engineered audio converter designed for audiophiles who demand flawless balanced sound. Featuring gold-plated connectors and a durable aluminum alloy shell, it ensures minimal signal loss and maximum durability. Compact and travel-friendly, it supports a wide range of premium digital audio players, making it an essential accessory for professional-grade personal audio setups.

Specifications

ASIN	B075165H2M
Best Sellers Rank	#11,454 in Electronics ( See Top 100 in Electronics ) #223 in Headphone Adapters
Brand	GEEKRIA
Color	Silver
Compatible Devices	Sony NW-ZX300A, NW-WM1A, NW-WM1Z, PHA-2A, TA-ZH1ES, Lotoo PAW 6000, HIFIMAN R2R2000, FiiO M11, CAYIN N6ii/A01, iBasso DX160, Hidizs S9 Pro Plus and more Compatible Devices Sony NW-ZX300A, NW-WM1A, NW-WM1Z, PHA-2A, TA-ZH1ES, Lotoo PAW 6000, HIFIMAN R2R2000, FiiO M11, CAYIN N6ii/A01, iBasso DX160, Hidizs S9 Pro Plus and more See more
Connector Type	Auxiliary
Current Rating	3 Amps
Customer Reviews	4.5 out of 5 stars 2,557 Reviews
Finish	Glossy
Item Dimensions	1.97 x 0.31 x 0.31 inches
Item Weight	5 Grams
Item dimensions L x W x H	1.97 x 0.31 x 0.31 inches
Manufacturer	GEEKRIA
Mfr Part Number	PJZ44-05
Model Number	PJZ44-05
Number of Items	1
Number of Ports	2
Package Quantity	1
Power Plug Type	No Plug
Smart Home Compatibility	Not Smart Home Compatible
Specific Uses For Product	Personal Audio Equipment
UPC	638170765780
Unit Count	1 Count
Warranty Description	1 year manufacturer

Reviews

E**C

21.02.2026

T**S

5.04.2026

D**O

4.04.2026

D**O

4.03.2026

H**E

29.09.2024

E**Z

13.11.2025

A**S

1.05.2026

S**L

17.02.2022

S**H

11.03.2026

P**N

5.10.2021

P**H

31.03.2025

T**L

27.08.2025

A**Y

27.10.2022

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