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For those with a computer or mobile device utilizing a single audio connection serving as both the microphone-in and sound-out jack, you may have found that very few microphones and devices are made with the plug needed to interface with this jack. In fact, most headset microphones have two separate plugs – one for sound-out and one for sound-in.

This adapter is designed to help you with this challenge. It separates the single jack on your device into two separate jacks, one for incoming sound (mic-in) and one for outgoing sound (sound out).

With what devices will this adapter work? The adapter is designed to work with any computer or mobile device with a single audio jack using the common CTIA standard. This includes:

• iPhones, iPads and Android devices with a single audio jack
• Computers with a single audio jack

In what situation will this jack be helpful to you? Some of the typical scenarios we see among our customers are the following:

Schools and other educational institutions in which you need to attach a normal headset microphone to an iPad for audio applications
Any user of an iPhone, iPad or Android device wishing to interact by means of a headset while on the road, while requiring added privacy, or when hold the device is simply not practical.
Recording situations in which input to the mobile device by a hand-held microphone or musical instrument pick-up device is required.
Owners of laptop computers (with single audio jack) wishing to use their favorite analog microphone for speech recognition or other applications.

Features:

Length: 8 inches
Weight: 0.3 oz. (8 gm)
Construction: gold-plated hardware for optimal performance
Warranty: One-year Speech Recognition Solutions warranty
Volume discounts available

Note: there are a couple of situations when this device may not accomplish everything you expect and you should know this up-front:

Most mobile devices will work with an external microphone of a certain “impedance” range. If not within this range, even though connected, the mobile device will still choose the on-board mic rather than the mic connected through the audio port. This isn’t always easy to detect, and requires that you do a test recording at varying distances from your mobile device and see if this impact the recording quality (if so, you’re using the on-board mic; if not you are using the externally connected mic). It not an easy process to learn the microphone impedance requirement for specific devices and determine whether a given mic will be accepted by your mobile device. Common wisdom is that an Apple device requires a mic with an impedance of at least 800 ohms. How can you determine in advance if your microphone will work? Honestly, this is hard information to come by. We have compiled a chart of microphone impedance and device compatibility for most analog mics sold on our site and this is shown below.
Most Mac computers, including some recent vintage machines, are designed with the expectation of audio input using “line-in” rather than “Mic-in” voltage. For this reason, some Mac computers will not interface properly with a standard microphone, regardless of its impedance. For this reason, we consider interfacing a with an external USB adapter to be the most reliable option for the Mac user. The exception is several of the recent vintage Macs, which will work with a mic-in input. For further information on external USB adapter please visit our USB Sound Adapter page at https://store.speechrecsolutions.com/usb-sound-adapters-c21.aspx

A few helpful links:

Microphone Impedance and Compatibility

The following chart shows some of the microphones on our site which we have specifically tested with this adapter on an iPhone 6.

Microphone	Output Impedance	Compatibility*

Andrea ANC 700	650 Ω	Yes
Andrea ANC-750	650 Ω	Yes
Andrea NC 181	600 Ω	Yes
Andrea NC 185	600 Ω	Yes
Audio Technica 8HEmW	600 Ω	Yes
Benertech A310	?	Yes
Buddy HeadsetMic DM101	?	Yes
Samson Q7	300 Ω	Yes
SpeechWare FlexyMike DEC	1500 Ω	Yes
SpeechWare FlexyMike SEC	1500 Ω	Yes
Sennheiser MD 431II**	250 Ω	Yes
Sennheiser ME3***	2200 Ω	Yes

All compatibility testing done using an iPhone 6 and QuickVoice memo recording software The MD431II requires an XLR to 1/8-inch adapter in order to work with a computer or mobile device **The Sennheiser ME3 requires use of our “ME3 adapter” in order to convert the plug to a standard 1/8 inch TRS plug.

Average Rating: (From 7 Reviews): Positive Rating

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Positive Rating A great solution
From Alan Lubanes of Georgetown, California on 9/27/2021.

My iPad cord input combines headset and mic into one Jack. If you want to split that into separate mic and headphone jacks, this adapter is just what you need to get. Works great.

Positive Rating It works!
From Albert Garcia of Walnut, California on 6/11/2018.

Does its job really well. Remember this will not work for ALL types of inputs. For me it is working great!

Positive Rating Works beautifully
From Laura Geiger of Brantford, Ontario on 11/12/2017.

I bought this item to connect a set of headphones with microphone to my iPad and it works really well.

Positive Rating highly recommended!
From Anonymous of Tyler, Texas on 9/26/2015.

Customer service over the phone was excellent!
Thank you.

Positive Rating Great Product
From Richard Brown of Arlington, Texas on 7/8/2014.

I constantly use my iPad Mini for multiple tasks. This pigtail effectively splits sound and microphone from the 3.5 mm jack giving me maximum flexibility and ease of use with my language learning software. Great quality of sound in and out. Fast, reliable service from Speech Recognition Solutions. Well done.

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12/24/2015 – 1. I want to connect my Audio Technica Pro 8 HE to my iPhone (6s plus). Will it work with this adapter (re the 700 ohm issue . . .

Response From Speech Recognition Solutions: Avraham:

Regarding the shipping, I'm suspecting you are looking at US Postal Service "express mail" which is touted to be 5-7 days. Yes, this is what it costs. Priority mail is about 2 weeks and tends to be about half this cost. We used to allow use of "First Class Mail International" which runs only $10 or so, but we were seeing delivery times of nearly a month (or more) and got so many complaints that we discontinued it.

Regarding the 8HEmW and iPhone adapter, I just tested the set-up and found that my iPad defaulted to the on-board mic, both alone and when also adding a P100 plug adapter. So I wouldn't recommend the combination. I guess this makes the shipping fee issue a bit moot.

Regards,

Jon Wahrenberger

4/30/2015 – Does this work with android smartphones with 3.5mm plug (e.g. Galaxy S5)?

Response From Speech Recognition Solutions: While we haven't specifically tested this adapter with the S5, it is compatible with other Android devices, so I expect it will be compatible with your device.

4/15/2015 – hi guys. I have got an Audio-Technica PRO8HEMW mic and i want to use it with my Ipad air 2. Will this adaptor work for my . . .

Response From Speech Recognition Solutions: The adapter works fine with IPad or IPhone but remember the PRO8HEMW does not have a speaker and when the adapter is plugged in it cuts out the devices speaker.

11/27/2014 – Does this enable the use of mic and headphone simultaneously? If I wear plugged in headphones and speak into a plugged in . . .

Response From Speech Recognition Solutions: When used with an iPad or iPhone, yes, it does allow simultaneous use of the microphone in and sound out. But this does not mean you can hear your speech through the headset - this type of functionality would depend upon the device and software and not the adapter.

Regarding the second part of your question, it's not really practical to use this with a MacBook, but only because the sound input on a MacBook is looking for a "Line-in" device and not a "Mic-in" device such as a headset microphone. The only practical way to interface most headset microphones with a MacBook (or any Mac for that matter) is with a USB adapter.

9/14/2014 – Would this work with Macbook pro retina display 2014?

Response From Speech Recognition Solutions: Yes, this should work with most newer MacBooks that have a 4-pin TRRS connector. If you Apple earbuds w/ mic work, then this adapter will work.

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