---
product_id: 692341364
title: "okcsc ETYMOTIC Male to QDC 2PIN Female Headphone Adapter for ER4SR Earbuds to QDC 2 PIN Cable Lossless Audio Adaptor for Etymotic ER4SR ER4XR ER3XR ER3SEER2XR ER2SE LNO08099 KZ ZSN ZS10 1 Pair Black"
brand: "okcsc"
price: "¥6355"
currency: JPY
in_stock: true
reviews_count: 4
category: "Okcsc"
url: https://www.desertcart.jp/products/692341364-okcsc-etymotic-male-to-qdc-2pin-female-headphone-adapter-er4sr
store_origin: JP
region: Japan
---

# High-purity OFC for lossless audio 2-pin QDC male-female adapter Ultra-light 20g compact design okcsc ETYMOTIC Male to QDC 2PIN Female Headphone Adapter for ER4SR Earbuds to QDC 2 PIN Cable Lossless Audio Adaptor for Etymotic ER4SR ER4XR ER3XR ER3SEER2XR ER2SE LNO08099 KZ ZSN ZS10 1 Pair Black

**Brand:** okcsc
**Price:** ¥6355
**Availability:** ✅ In Stock

## Summary

> 🎧 Elevate your sound game—because your ears deserve the best!

## Quick Answers

- **What is this?** okcsc ETYMOTIC Male to QDC 2PIN Female Headphone Adapter for ER4SR Earbuds to QDC 2 PIN Cable Lossless Audio Adaptor for Etymotic ER4SR ER4XR ER3XR ER3SEER2XR ER2SE LNO08099 KZ ZSN ZS10 1 Pair Black by okcsc
- **How much does it cost?** ¥6355 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/692341364-okcsc-etymotic-male-to-qdc-2pin-female-headphone-adapter-er4sr)

## Best For

- okcsc enthusiasts

## Why This Product

- Trusted okcsc brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Dedicated Support:** Backed by responsive customer service to keep your audio experience flawless and worry-free.
- • **Audiophile-Grade Sound:** Crafted with oxygen-free copper to deliver crystal-clear, lossless audio every time.
- • **Plug & Play Simplicity:** Instantly converts your cables without fuss—upgrade your setup in seconds.
- • **Seamless Compatibility:** Works flawlessly with top-tier headphones like Etymotic ER4SR, SENNHEISER IE300, KZ ZSN & more.
- • **Featherlight Convenience:** At just 20 grams and 0.19 inches thick, it’s the perfect travel companion for on-the-go pros.

## Overview

The okcsc ETYMOTIC Male to QDC 2PIN Female Headphone Adapter is a precision-engineered, ultra-lightweight audio accessory designed for seamless cable conversion. Compatible with a wide range of premium headphones including Etymotic ER4SR, SENNHEISER IE300, and KZ ZSN, it ensures lossless sound transmission through high-purity oxygen-free copper construction. Perfect for audiophiles and professionals seeking effortless upgrades and superior audio fidelity.

## Description

ETYMOTIC Male to QDC 2PIN Female Headphone Adapter for ER4SR Earbuds to QDC 2 PIN Cable Lossless Audio Adaptor for Etymotic ER4SR ER4XR ER3XR ER3SEER2XR ER2SE LNO08099 KZ ZSN ZS10 1 Pair Black

Review: Doesnt fit er2xr - Doesnt work, even though they look similar i found out the hard way they are not compatible PS: I made it work by using sandpaper on the ER2XR, still going to leave this review with 1 star because I shouldn't have to physically modify my equipment to make a product compatible when it advertises compatibility without any modification needed.
Review: Bad Setup for Polarity - These adapters work electrically, but the right-angle design has an annoying limitation: the pair is not mirrored in a way that preserves polarity while also letting both sides point inward. On my 2-pin IEM cable, the polarity is symmetric on both left and right. With these adapters, keeping the polarity correct makes both right-angle MMCX ends point the same absolute direction. If I flip one adapter to make them both point inward toward my ears, the polarity reverses on one of the sides, which is incorrect. Mismatched polarity breaks stereo imaging, reduces bass response, and ruins center focus. Vocals and centered sounds no longer lock into place, and the sound becomes diffuse and hollow, especially on tracks with strong mono bass or centered vocals. So they may technically work, but for most 2-pin IEM/cable setups you cannot get both correct polarity and ideal left/right fitment. A true mirrored L/R adapter pair would be better. I would only recommend these if you are okay checking polarity with a multimeter and possibly accepting awkward cable routing.

## Features

- Headphone Adapter Model: IE300/0.78/ER4SR male to QDC female mini headphone adapter, compact and convenient conversion of audio cables for quick use makes it a must-have accessory for audio enthusiasts.
- High Compatibility: Compatible with a variety of IE300/0.78/ER4SR/QDC models of headphones and cables, for SENNHEISER IE200 IE300 IE600 IE900 AKG N5005 N30 N40, for Etymotic ER4SR ER4XR ER3XR ER3SE ER2XR ER2SE LN008099, for KZ BA10 AS10 zS10 ZSR ZST ED12 ES3 ES4 KZZS10 ZS10 PRO ZSN ZSN PRO ZSN PRO X ZST ZSTX KZZSX ZAX ASF ASX EDX AS16 SHUER CONDUCTOR SINGER and more, ensuring a seamless connection with your favourite headphones while bringing you more convenient experience.
- Excellent Craftsmanship: Only 0.19 inches and weighing only 20 grams, this adapter embodies high-end standards of craftsmanship, ensuring lightweight convenience and powerful functionality.
- Multifunctional Application: The adapter is the perfect mini-connector for tweaking and upgrading your headphone experience, designed for convenience without compromising on sound quality, made of high-purity OFC (Oxygen Free Copper) to ensure superior audio quality and durability, ideal for audiophiles seeking superior sound performance.
- Comprehensive Customer Support: Includes a pair of headphone adapters. If you have any questions about compatibility, usage or product quality, our dedicated customer support team can provide you with comprehensive help and answers.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0DBH53LDZ |
| Best Sellers Rank | #52,438 in Electronics ( See Top 100 in Electronics ) #714 in Headphone Adapters |
| Brand | okcsc |
| Color | Black |
| Compatible Devices | Headphone |
| Connector Type | 2-pin |
| Current Rating | 1 A |
| Customer Reviews | 1.8 out of 5 stars 4 Reviews |
| Manufacturer | OKCSC |
| Mfr Part Number | QDC to ER4SR Male Black |
| Model Number | IE300/0.78/ER4SR |
| Number of Items | 1 |
| Number of Ports | 1 |
| Package Quantity | 1 |
| Power Plug Type | No Plug |
| Specific Uses For Product | Headphones |
| Warranty Description | 60 days |

## Product Details

- **Brand:** okcsc
- **Color:** Black
- **Compatible Devices:** Headphone
- **Connector Type:** 2-pin
- **Specific Uses For Product:** Headphones

## Images

![okcsc ETYMOTIC Male to QDC 2PIN Female Headphone Adapter for ER4SR Earbuds to QDC 2 PIN Cable Lossless Audio Adaptor for Etymotic ER4SR ER4XR ER3XR ER3SEER2XR ER2SE LNO08099 KZ ZSN ZS10 1 Pair Black - Image 1](https://m.media-amazon.com/images/I/61FHv0P8itL.jpg)
![okcsc ETYMOTIC Male to QDC 2PIN Female Headphone Adapter for ER4SR Earbuds to QDC 2 PIN Cable Lossless Audio Adaptor for Etymotic ER4SR ER4XR ER3XR ER3SEER2XR ER2SE LNO08099 KZ ZSN ZS10 1 Pair Black - Image 2](https://m.media-amazon.com/images/I/71mn3wkF5BL.jpg)
![okcsc ETYMOTIC Male to QDC 2PIN Female Headphone Adapter for ER4SR Earbuds to QDC 2 PIN Cable Lossless Audio Adaptor for Etymotic ER4SR ER4XR ER3XR ER3SEER2XR ER2SE LNO08099 KZ ZSN ZS10 1 Pair Black - Image 3](https://m.media-amazon.com/images/I/61d+pX7F6-L.jpg)
![okcsc ETYMOTIC Male to QDC 2PIN Female Headphone Adapter for ER4SR Earbuds to QDC 2 PIN Cable Lossless Audio Adaptor for Etymotic ER4SR ER4XR ER3XR ER3SEER2XR ER2SE LNO08099 KZ ZSN ZS10 1 Pair Black - Image 4](https://m.media-amazon.com/images/I/61JHyT3S+mL.jpg)
![okcsc ETYMOTIC Male to QDC 2PIN Female Headphone Adapter for ER4SR Earbuds to QDC 2 PIN Cable Lossless Audio Adaptor for Etymotic ER4SR ER4XR ER3XR ER3SEER2XR ER2SE LNO08099 KZ ZSN ZS10 1 Pair Black - Image 5](https://m.media-amazon.com/images/I/61ssGnoqs0L.jpg)

## Available Options

This product comes in different **Color, Size** options.

## Customer Reviews

### ⭐ Doesnt fit er2xr
*by O***N on December 25, 2024*

Doesnt work, even though they look similar i found out the hard way they are not compatible PS: I made it work by using sandpaper on the ER2XR, still going to leave this review with 1 star because I shouldn't have to physically modify my equipment to make a product compatible when it advertises compatibility without any modification needed.

### ⭐⭐ Bad Setup for Polarity
*by S***U on May 14, 2026*

These adapters work electrically, but the right-angle design has an annoying limitation: the pair is not mirrored in a way that preserves polarity while also letting both sides point inward. On my 2-pin IEM cable, the polarity is symmetric on both left and right. With these adapters, keeping the polarity correct makes both right-angle MMCX ends point the same absolute direction. If I flip one adapter to make them both point inward toward my ears, the polarity reverses on one of the sides, which is incorrect. Mismatched polarity breaks stereo imaging, reduces bass response, and ruins center focus. Vocals and centered sounds no longer lock into place, and the sound becomes diffuse and hollow, especially on tracks with strong mono bass or centered vocals. So they may technically work, but for most 2-pin IEM/cable setups you cannot get both correct polarity and ideal left/right fitment. A true mirrored L/R adapter pair would be better. I would only recommend these if you are okay checking polarity with a multimeter and possibly accepting awkward cable routing.

### ⭐ Doesn't fit ER2XR
*by J***B on December 29, 2024*

Like the other comment said, does not fit ER2XR dispite it being advertised as such. Disappointed.

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---

*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-11-06*