---
product_id: 248294494
title: "Bluetooth Adapter and Wireless Audio Receiver with Microphone and 2.5mm Jack for Sennheiser HD598 / HD598Cs / HD598SE / HD595 / HD599 / HD559 / HD569 / HD579 / HD518 / HD558 Headphones"
brand: "airfrex"
price: "₪312"
currency: ILS
in_stock: true
reviews_count: 5
category: "Airfrex"
url: https://www.desertcart.co.il/products/248294494-bluetooth-adapter-and-wireless-audio-receiver-with-microphone-and-2
store_origin: IL
region: Israel
---

# Texas Instrument amp chipset for rich sound Built-in mic for seamless hands-free calls Bass Boost EQ toggle for customizable audio Bluetooth Adapter and Wireless Audio Receiver with Microphone and 2.5mm Jack for Sennheiser HD598 / HD598Cs / HD598SE / HD595 / HD599 / HD559 / HD569 / HD579 / HD518 / HD558 Headphones

**Brand:** airfrex
**Price:** ₪312
**Availability:** ✅ In Stock

## Summary

> 🎧 Elevate your Sennheiser—wireless sound, wired quality.

## Quick Answers

- **What is this?** Bluetooth Adapter and Wireless Audio Receiver with Microphone and 2.5mm Jack for Sennheiser HD598 / HD598Cs / HD598SE / HD595 / HD599 / HD559 / HD569 / HD579 / HD518 / HD558 Headphones by airfrex
- **How much does it cost?** ₪312 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.il](https://www.desertcart.co.il/products/248294494-bluetooth-adapter-and-wireless-audio-receiver-with-microphone-and-2)

## Best For

- airfrex enthusiasts

## Why This Product

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

## Key Features

- • **Hands-Free Convenience:** Integrated microphone lets you answer or end calls with a single button press—stay connected without missing a beat.
- • **Customizable Bass Boost:** Toggle the preset EQ bass enhancement to match your mood or music genre—feel every beat or keep it clean.
- • **Audiophile-Grade Clarity:** Texas Instrument amplifier chipset delivers dynamic, detailed sound that elevates your Sennheiser experience.
- • **Seamless Wireless Freedom:** Latest CSR Bluetooth 4.1 chipset ensures lossless, lag-free audio transmission for uninterrupted listening.
- • **Ultra-Compact & Lightweight:** At just 15g and pocket-sized, this sleek silver adapter blends effortlessly with your premium headphones and lifestyle.

## Overview

The Airfrex Bluetooth Adapter transforms your Sennheiser HD series headphones into a wireless powerhouse with a Texas Instrument amplifier for superior sound, customizable bass boost, and CSR Bluetooth 4.1 for lossless audio. Featuring a built-in microphone for hands-free calls and a compact, lightweight design, it’s engineered for professionals who demand premium audio and seamless connectivity on the go.

## Description

Airfrex SEHD is a great Bluetooth adapter that custom made for Sennheiser over ear headphones. This Bluetooth receiver is able to turn the Sennheiser HD series headphones into Bluetooth headphones, so our wireless audio adapter serves as the best Sennheiser headphone accessories, it is a perfect choice for Sennheiser headphone cable replacement and cord converter. Normally, the other Bluetooth receiver is not able to drive the Sennheiser HD series headphones because these headphones have larger impedance and the sound will be very low, however, Airfrex Bluetooth adapter has dedicated headphone amplifier built inside which is much more powerful and get the job done easily, with our wireless stereo adapter, there is no compromise in the sound quality at all, you can?t tell the difference with wired and wireless!

Review: Unsure if i got correct model, doesn't fit HD598 - For all the marketing on this store page that the product is specifically designed for the HD598, it doesn't fit! And I have no clue if I received the correct model (SEHD). There's no model code on the device itself, and the packaging suggests i received the wrong version. The 2.5mm end of the cable that comes with the headphones has two grooves on the side. This is to assist with keeping the cable locked to the headphones. In my photos where i hold the airflex next to the 2.5mm cable, you can see that the airflex has about the same diameter as the 2.5mm cable but doesn't have the grooves, so it won't snap into place. Connecting the device to my phone via bluetooth was very easy. Just a shame i could not hear anything because i can't plug the device into my headphones!
Review: Works as described, no noticeable delay - I can finally brew coffee along with good music! - This deserves more praise - works with my HD 598 flawlessly, and working perfectly as described. 1) I just received it so I cannot comment on the battery life yet 2) So far the audio quality is excellent, identical to that of connections with cables. 3) There is not a delay as obvious as your typical bluetooth speakers, and I can almost say that latency would not be an issue even for games - I'll test it out myself 4) The proprietary plug was a non-issue as they have dealt with that in their design already, it fixes itself into my HD 598 without any issue 5) For those who suffered terrible sound quality, disable your mic (voice input) from the bluetooth connection (AF Lossless Hands-Free AG Audio output), as well as limiting the output to only the AF Lossless Stereo. The terrible audio comes from the "AF Lossless Hands-Free AG Audio output", and it is a common thing for bluetooth audio devices, not a device-specific issue.

## Features

- Excellent Sound Quality. This Bluetooth audio receiver has a dedicated Texas Instrument headphone amplifier chipset built-in which makes it more dynamic and rich in details. The output is much more po
- Optional Bass Boost Feature. Airfrex Bluetooth receiver has preset EQ function which allows users to turn on or turn off the bass enhancement feature if needed, this feature can compensate the bass pe
- Latest CSR Bluetooth 4.1 Chipset. This wireless stereo adapter applies the most advanced CSR Bluetooth chip which ensures this is lossless in audio transmission which is a huge difference from those l
- Built-in Microphone for Phone Call. Our music adapter also has built-in Microphone which allow the users to pick up or end a phone call by a simple press on the button, so they won?t miss any phone ca

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07GVT1K1T |
| Audio Input | 2.5mm AUX |
| Audio Output Mode | Stereo |
| Audio Output Type | Bluetooth |
| Best Sellers Rank | #144,795 in Electronics ( See Top 100 in Electronics ) #491 in Headphone Adapters |
| Bluetooth support? | Yes |
| Brand | Airfrex |
| Brand Name | Airfrex |
| Colour | Silver |
| Compatibility Options | Sennheiser headphones, Smartphone |
| Compatible Devices | Smartphone |
| Connectivity Technology | Bluetooth |
| Connector Type Used on Cable | Auxiliary |
| Control Method | Touch |
| Control Type | Volume Control |
| Country of Origin | USA |
| Customer Reviews | 3.1 out of 5 stars 40 Reviews |
| Hardware Interface | Bluetooth |
| Human Interface Input | Buttons |
| Includes Remote | No |
| Installation Type | wireless |
| Item Weight | 15 Grams |
| Item Weight Unit of Measure | 15 Grams |
| Lithium Battery Energy Content | 0.4 Watt Hours |
| Lithium Battery Weight | 2.6 Grams |
| Manufacturer | Airfrex |
| Model Name | SEHD |
| Number of Batteries | 1 Lithium Polymer batteries required. (included) |
| Number of Channels | 2 |
| Number of Lithium-ion Cells | 1 |
| Number of Ports | 1 |
| Power Source | Adapter |
| Product Features | Built-In Microphone |
| Rechargeable Battery Included | No |
| Special Feature | Built-In Microphone |
| Supported Application | Any application supporting Bluetooth transmission |
| Supported Media Type | MP3 |
| Supported Standards | Bluetooth 4.1 |
| UPC | 708210350303 |
| Unit Count | 1.0 Count |
| Wireless Compability | Bluetooth |

## Product Details

- **Special Feature:** Built-in Microphone
- **Brand:** Airfrex
- **Power Source:** Adapter
- **Item Weight:** 15 Grams
- **Colour:** Silver

## Images

![Bluetooth Adapter and Wireless Audio Receiver with Microphone and 2.5mm Jack for Sennheiser HD598 / HD598Cs / HD598SE / HD595 / HD599 / HD559 / HD569 / HD579 / HD518 / HD558 Headphones - Image 1](https://m.media-amazon.com/images/I/51j06HoUsDL.jpg)
![Bluetooth Adapter and Wireless Audio Receiver with Microphone and 2.5mm Jack for Sennheiser HD598 / HD598Cs / HD598SE / HD595 / HD599 / HD559 / HD569 / HD579 / HD518 / HD558 Headphones - Image 2](https://m.media-amazon.com/images/I/61uieJfe5vL.jpg)
![Bluetooth Adapter and Wireless Audio Receiver with Microphone and 2.5mm Jack for Sennheiser HD598 / HD598Cs / HD598SE / HD595 / HD599 / HD559 / HD569 / HD579 / HD518 / HD558 Headphones - Image 3](https://m.media-amazon.com/images/I/61aCzZ+YOaL.jpg)
![Bluetooth Adapter and Wireless Audio Receiver with Microphone and 2.5mm Jack for Sennheiser HD598 / HD598Cs / HD598SE / HD595 / HD599 / HD559 / HD569 / HD579 / HD518 / HD558 Headphones - Image 4](https://m.media-amazon.com/images/I/61Oe+e5JlUL.jpg)
![Bluetooth Adapter and Wireless Audio Receiver with Microphone and 2.5mm Jack for Sennheiser HD598 / HD598Cs / HD598SE / HD595 / HD599 / HD559 / HD569 / HD579 / HD518 / HD558 Headphones - Image 5](https://m.media-amazon.com/images/I/61VI0x2JGvL.jpg)

## Questions & Answers

**Q: How long does the battery takes to charge and how long it last ?**
A: It takes one hour and a half for a full charge and every full charge last 6-8 hours.

**Q: How Heavy is it ?**
A: It weights 10 grams.

**Q: Does it have dual link feature ?**
A: Yes, it has dual link functions which means this adapter can pair with two devices ( two phones or tablets ) at the same time.

**Q: Can I pick up any phone call from this Bluetooth adapter when I am listening music on the phone ?**
A: Yes, it has microphone built-inside. You can pick up or reject any phone calls via the button.

**Q: Is it powerful enough to drive the Sennheiser Headphones ?**
A: Yes, It has dedicated Headphone DAC ( amplifier ) built-inside.

## Customer Reviews

### ⭐ Unsure if i got correct model, doesn't fit HD598
*by K***Y on 14 December 2022*

For all the marketing on this store page that the product is specifically designed for the HD598, it doesn't fit! And I have no clue if I received the correct model (SEHD). There's no model code on the device itself, and the packaging suggests i received the wrong version. The 2.5mm end of the cable that comes with the headphones has two grooves on the side. This is to assist with keeping the cable locked to the headphones. In my photos where i hold the airflex next to the 2.5mm cable, you can see that the airflex has about the same diameter as the 2.5mm cable but doesn't have the grooves, so it won't snap into place. Connecting the device to my phone via bluetooth was very easy. Just a shame i could not hear anything because i can't plug the device into my headphones!

### ⭐⭐⭐⭐⭐ Works as described, no noticeable delay - I can finally brew coffee along with good music!
*by A***N on 22 March 2024*

This deserves more praise - works with my HD 598 flawlessly, and working perfectly as described. 1) I just received it so I cannot comment on the battery life yet 2) So far the audio quality is excellent, identical to that of connections with cables. 3) There is not a delay as obvious as your typical bluetooth speakers, and I can almost say that latency would not be an issue even for games - I'll test it out myself 4) The proprietary plug was a non-issue as they have dealt with that in their design already, it fixes itself into my HD 598 without any issue 5) For those who suffered terrible sound quality, disable your mic (voice input) from the bluetooth connection (AF Lossless Hands-Free AG Audio output), as well as limiting the output to only the AF Lossless Stereo. The terrible audio comes from the "AF Lossless Hands-Free AG Audio output", and it is a common thing for bluetooth audio devices, not a device-specific issue.

### ⭐⭐⭐⭐ It does work...
*by A***T on 3 December 2025*

I purchased this adapter hoping to turn a pair of Sennheiser HD560S headphones into wireless ones. Although this specific model of headphones isn't one listed, I thought I would take a chance and see if it would fit. At first this wasn't the case; however after some fiddling around, I managed to get it to work. The problem is that it wasn't easy to seat the connector in a headphone jack normally occupied by the proprietary Sennheiser cable. Initially I was only able to hear sound in the right channel. However, having gotten it to connect, I am very pleased with the sound quality of my HD560Ss operating wirelessly. I think the codec shared by the adapter and my laptop is of low quality - probably SBC - but owing to the quality of the headphones the sound seem to leave little to be desired. I would recommend anyone buying this adapter to not despair if initially it doesn't seem to work.

## Frequently Bought Together

- Airfrex Bluetooth Adapter and Wireless Audio Receiver with Microphone and 2.5mm Jack for Sennheiser HD598 / HD598Cs / HD598SE / HD595 / HD599 / HD559 / HD569 / HD579 / HD518 / HD558 Headphones
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*Product available on Desertcart Israel*
*Store origin: IL*
*Last updated: 2026-05-20*