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Bluetooth 5.3 Transmitter Receiver for TV to Headphones, 3.5mm Jack Bluetooth Adapter, aptX Adaptive/Low Latency/HD Audio Adapter for Home Stereo, Airplane, Boat, Gym, Long Battery Life
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Return this item for free
Free returns are available for the shipping address you chose. For a full refund with no deduction for return shipping, you can return the item for any reason in new and unused condition.
Learn more about free returns.- Go to your orders and start the return
- Select the return method
- Ship it!
Purchase options and add-ons
Brand | 1Mii |
Hardware interface | Bluetooth |
Colour | Black |
Compatible devices | Airplane, TV, Smartphone, Home Stereo System |
Product dimensions | 5L x 3.5W x 0.8H centimetres |
Data link protocol | Bluetooth |
Manufacturer | 1Mii |
About this item
- 【𝟐-𝐢𝐧-𝟏 Bluetooth Audio Transmitter Receiver】1Mii Bluetooth adapter combines Bluetooth transmitter and receiver with 3.5mm auxiliary jack. In TX mode, helps you transmit audio from devices like TVs, PCs, and airplane entertainment to your Bluetooth headphones or speakers. In RX mode, lets you connect your smartphone to wired speakers or earphones wirelessly from Bluetooth.
- 【BLUETOOTH 5.3 & DUAL LINK】The latest Bluetooth 5.3 technology enables your Bluetooth adapter backward compatible with all Bluetooth version and it can deliver more stable wireless to your devices. And it can be paired with two Bluetooth devices at the same time in TX and RX modes to share happiness with your family/friends.
- 【APTX HD & LOW LATENCY】With advanced aptx low latency technologies, it can deliver up 80% lower latency. Whether you are playing video games or watching movies, you'll experience high quality sound without audio and video to be out of sync issue. 𝐓𝐢𝐩𝐬: 𝐋𝐨𝐰 𝐥𝐚𝐭𝐞𝐧𝐜𝐲 𝐫𝐞𝐪𝐮𝐢𝐫𝐞𝐬 𝐭𝐡𝐞 𝐬𝐮𝐩𝐩𝐨𝐫𝐭 𝐨𝐟 𝐁𝐥𝐮𝐞𝐭𝐨𝐨𝐭𝐡 𝐡𝐞𝐚𝐝𝐬𝐞𝐭𝐬 𝐨𝐫 𝐬𝐩𝐞𝐚𝐤𝐞𝐫𝐬. 𝐋𝐨𝐰 𝐥𝐚𝐭𝐞𝐧𝐜𝐲 𝐝𝐨𝐞𝐬 𝐧𝐨𝐭 𝐬𝐮𝐩𝐩𝐨𝐫𝐭 𝐢𝐧 𝐑𝐗 𝐦𝐨𝐝𝐞!
- 【NO MORE CORDS】Wirelessly transmit audio from in-flight entertainment, gym equipment, gaming devices, TV or any 3.5mm audio jack. Use your AirPods, earbuds or wireless headphones anywhere with no more cords in the way. Now you don't have to sacrifice audio quality/comfort in flight.
- 【LONG BATTERY LIFE】1Mii bluetooth adapter deliver 12 hours in transmitter mode and up to 15 hours in receiver mode, all on one charge. Support using while charging.
- 【Please Note】It is not recommended to use the Bluetooth receiver for instruments such as electric-pianos, guitars, or in live music situations, as there may be a noticeable delay.
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From the brand

BRING MUSIC TO LIFE
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1Mii is a high-tech enterprise composed of a group of innovative industrial designers, aesthetic masters, a team of PhDs in acoustic tuning, and musicians.
Each 1Mii product has been rigorously tested by the 1Mii professional acoustic laboratory to ensure it meets the brand's values: Bring Music to Life!
At present, 1Mii has more than 10 million users, products cover audio accessories, Bluetooth headphones, and HiFi audiophile devices.
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Bluetooth Transmitter for TV
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Bluetooth Transmitter for TV
Product Description

Enjoy the Journey
Bluetooth Airplane Adapter
Comfortably enjoy movies or music using your Bluetooth headphones in your flight.
1Mii ML300 2-in-1 Bluetooth 5.3 Transmitter Receiver

Latest Bluetooth 5.3
Using the latest Bluetooth 5.3 Version and supports aac, aptX, aptX HD, aptX Low Latency, aptX Adaptive.

Never Run out of Battery
With battery life of 15h to cover even the longest flight. ML300 also can be used while charging with the included cable.

Product Diagram
1. Mode switch: TX/RX/OFF
2+3: Pairing button
4. 3.5mm audio port
5. USB port for charging or USB Audio Out (ONLY in TX mode)

What's in the Box?
1. 2-in-1 Bluetooth Transmitter Receiver
2. USB Type-C Charging Cable
3. 3.5mm Audio Cable
4. 3.5mm to 2RCA AUX Audio Cable
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Make Your Trip More Interesting
Steam music from your phone to the stereo of your boat and enjoy the journey.
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Enjoy High Definition Audio
Enjoy high definition audio while exercising if your Bluetooth headphones support aptX HD/Adaptive.
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aptX Low Latency
Ensure synchronized audio&video when watching TV.
Worked with aptX-LL/AD/HD supported BT headphones.
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Adjustable Audio Codec
Double-click Headphone button#1 to switch SBC/aptX-LL/HD/Adaptive.
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The Latest Bluetooth 5.3 Technology

Use 1Mii ML300 as a Bluetooth transmitter
1. Switch to "TX" mode
2. Long press the headphone Button#1 for about 2s (LED flashing blue and red)
3. Set your Bluetooth headphones/soundbar/speaker also enter pairing mode
4. After pairing successfully (LED stop flashing), connect the ML300 to the AUDIO OUT jack of PC/TV/MP3

Use 1Mii ML300 as a Bluetooth recevier
1. Switch to "RX" mode
2. Long press the headphone Button#1 for about 2s (LED flashing blue and red)
3. Turn on the Bluetooth function of your phone/tablet/laptop, tap "ML300" to connect.
4. After pairing successfully, connect the ML300 to the AUDIO IN jack of wired speaker/soundbar/earphones
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Stream Music to Car Stereo
Simply connect 1Mii ML300 to your car stereo and pair it with your phone to enjoy wireless music.
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Stream Music to HiFi Vintage
Q1 | Is it compatible with AirPods? |
A1 | Yes, it is compatible with AirPods, but it is INCOMPATIBLE with AirPods Pro 2nd Gen. |
Q2 | Why the voice lag still here when use this Low latency ML300 Bluetooth adapter with my Bluetooth headphones? |
A2 | To achieve low latency, your Bluetooth headphones/speaker should also support function of aptX Low Latency. Or, the receiving device might use another codec (e.g. SBC, aptX), resulting in a 70-200ms audio delay which may be noticeable by some users. |
Q3 | What shall I do if I can not get ML300 Bluetooth Adapter to pair with my Bluetooth Headphones or Speakers? |
A3 | Turn off Bluetooth on all mobile phones or PC in house (Make sure your headphones/speaker is not paired with other device automatically during the process of pairing ML300). For first time pairing, make sure the pairing-distance is within 1 meter. If still cannot get them paired, set both ML300 Bluetooth Adapter and your Bluetooth headphones or speakers to factory default. - Reset ML300: Long press the Bluetooth button #1 for about 7 seconds until the light flash white for 3 times. |
Q4 | Can it be used for guitar or piano? |
A4 | For live music or musical instruments like guitar or piano, we don't suggest using ML300, please use the specialized adapter. |
Q5 | How to change the audio codec? |
A5 | Please double-click the Bluetooth button #1 to cycle change to different audio codecs. SBC(blue)/aptX Low Latency(white)/aptX HD(green)/aptX Adaptive(Yellow). Note: If your Bluetooth device does not support aptX Low Latency/aptX HD/aptX Adaptive, the light on ML300 will not change to the specific colour to use the aptX Low Latency/aptX HD/aptX Adaptive audio codec. |
Q6 | Does it support online calls or conference with a headset? |
A6 | 1Mii ML300 doesn’t have a built-in mic, so it doesn't support any online calls or conference with a headset. |
Q7 | Does it work with any TV? |
A7 | Please make sure your TV has 3.5mm AUX AUDIO OUT jack or Headphone jack or 2RCA AUDIO OUT jack. |
Q8 | How to reset the 1Mii ML300? |
A8 | Please press and hold the Bluetooth button #1 for about 7 seconds until the LEDs flash purple for 3 times. |
Product details
- Batteries : 1 Lithium Polymer batteries required. (included)
- Product Dimensions : 5 x 3.5 x 0.8 cm; 100 g
- Date First Available : 11 Nov. 2020
- Manufacturer : 1Mii
- ASIN : B08H7X718F
- Item model number : ML300
- Country of origin : China
- Guaranteed software updates until : unknown
- Delivery information:: We cannot deliver certain products outside mainland UK ( Details). We will only be able to confirm if this product can be delivered to your chosen address when you enter your delivery address at checkout.
- Best Sellers Rank: 25,430 in Computers & Accessories (See Top 100 in Computers & Accessories)
- Customer reviews:
Important information
Safety Information:
It is not recommended to use the Bluetooth receiver for instruments such as electric-pianos, guitars, or in live music situations, as there may be a noticeable delay.
Customer reviews
Customer Reviews, including Product Star Ratings, help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyses reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers say
Customers find the Bluetooth adapter easy to use and appreciate its compact size, with one mentioning it works well on various airline AV systems. The sound quality and connectivity receive mixed feedback - while some say the sound is adequate and the headphones connect easily, others report no sound or connection issues. The latency receives mixed reviews, with some noting very low latency while others experience audio delay. The adapter's quality and performance are also mixed, with some finding it a top-class transmitter while others report poor quality.
AI-generated from the text of customer reviews
Customers find that the Bluetooth adapter works well, with one customer noting its compatibility with various airline AV systems.
"...Not tested battery life yet, but intiial impressions are excellent. Smaller than I expected, which is a good thing!" Read more
"...resetting the ear buds, pairing succeeded and the transmitter/receiver has been working fine...." Read more
"...The instructions are fairly clear and there are a few other neat features in regards to selecting and showing what codec is being used through..." Read more
"...It's a great little gadget to have in your arsenal when travelling and could save the day in a couple of situations I can think of...." Read more
Customers find the Bluetooth adapter easy to use and pair.
"...Easy peasy! Simply holding down the number one button sets it to pairing mode and anything currently in pairing mode near it will connect...." Read more
"This bluetooth device is so easy to use and set up. Has a switch to choose between Tx, Rx and Off. The device is so small and compact it's great...." Read more
"...Easy to connect. Two channels so I can choose between my speakers and my headphones at the touch of a button...." Read more
"...Very easy to connect and use." Read more
Customers praise the Bluetooth transmitter's strong signal and top-class performance, with one customer noting its reliability during a 9-hour flight.
"...cancelling AirPod Pros for every part of my travel, wirelessly with the device in transmit mode...." Read more
"...Easy to connect. Two channels so I can choose between my speakers and my headphones at the touch of a button...." Read more
"Used in transmission mode, very easy to pair. Purchased to used on a flight with Bluetooth head phones...." Read more
"...it anyway from the seats tv usb port recommend as its both recieve and transmit audio so works for almost any kind of setup with old or new devices" Read more
Customers appreciate the compact size of the Bluetooth adapter, noting it is smaller than expected.
"...Smaller than I expected, which is a good thing!" Read more
"...devices so I can use wireless headphones with them and due to their compactness they add very little in the way of size and weight to what I..." Read more
"...It's really lightweight and takes up almost no room in my bag sat with my chargers and the like...." Read more
"...The device is so small and compact it's great. Pairing to my headphones is so straight forward and just takes around 10 seconds. Very impressed...." Read more
Customers have mixed experiences with the sound quality of the Bluetooth adapter, with some finding it adequate while others report little or no sound and describe it as noisy.
"...Having this device meant I was able to use my noise cancelling AirPod Pros for every part of my travel, wirelessly with the device in transmit mode...." Read more
"...I was slightly underwhelmed with audio quality at first, but once I worked out how to get it to connect using APTX-HD..." Read more
"...Good points: usually in synch, no speech delay. Sound quality ok." Read more
"...Low hiss. Speech sounds a bit hissy/tinny watching YouTube but that could be the speakers or the video itself. Bass sounds brilliant...." Read more
Customers have mixed experiences with the Bluetooth adapter's connectivity: while some report easy and automatic pairing, others mention difficulties with initial connection and complete failure to pair at all.
"...But after resetting the ear buds, pairing succeeded and the transmitter/receiver has been working fine...." Read more
"...(the instructions are not clear - you have to press the connect button a few times after it has..." Read more
"...This device is super simple to use and I have not had any issues connecting them either as transmitters or receivers...." Read more
"...Inconsistent connectivity when pairing with a second pair of headphones...." Read more
Customers have mixed experiences with the Bluetooth adapter's latency, with some reporting very low latency and fast connection to headphones, while others mention audio delay issues.
"...I have not noticed any issue with latecy despite the fact that the ear buds support only the worst of the four codecs supported by the 1Mii device." Read more
"...recent set of Sennheiser wireless headphones and can confirm there was no lag. Your experience may differ!..." Read more
"...Plug And Pray! - Latency! Massive detectable latency when watching movies (lip-sync on videos is horrible) or playing games..." Read more
"...Pairing to my headphones is so straight forward and just takes around 10 seconds. Very impressed...." Read more
Customers have mixed opinions about the Bluetooth adapter's quality, with some finding it good while others report very poor performance.
"...the increase in quality was very noticeable...." Read more
"...It is so annoying that airlines insist on you using their poor quality earphones and change the inputs...." Read more
"...receiver for low impedance studio headphones, I was actually impressed with the quality...." Read more
"Generally a good all round product with good compatibility , bit fiddly on some airlines to get the full stereo , but otherwise good...." Read more
Reviews with images

Fantastic product, great performance!
Top reviews from United Kingdom
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- Reviewed in the United Kingdom on 19 March 2025Colour Name: WhiteVerified PurchaseSo far so good. Does exactly what I wanted allowing me to TX to my BT headphones from my main HiFi. I was slightly underwhelmed with audio quality at first, but once I worked out how to get it to connect using APTX-HD (the instructions are not clear - you have to press the connect button a few times after it has made a basic connection), the increase in quality was very noticeable. Not tested battery life yet, but intiial impressions are excellent. Smaller than I expected, which is a good thing!
- Reviewed in the United Kingdom on 11 November 2024Colour Name: BlackVerified PurchaseI had a few initial problems pairing these with my SoundPeats ear buds - only one of the two buds seemed to pair at the same time. But after resetting the ear buds, pairing succeeded and the transmitter/receiver has been working fine. I have not noticed any issue with latecy despite the fact that the ear buds support only the worst of the four codecs supported by the 1Mii device.
- Reviewed in the United Kingdom on 12 December 2024Colour Name: BlackVerified PurchaseI liked this product so much I have two!
This device is super simple to use and I have not had any issues connecting them either as transmitters or receivers. In fact I recently used one as a transmitter on an old sound system to transmit to another attached to an old speakers system. Easy peasy!
Simply holding down the number one button sets it to pairing mode and anything currently in pairing mode near it will connect. After that it connects automatically when both it and the paired device are turned on.
I've not tried to use dual transmission/reception mode so can't say how that might work, but I hazard a guess most people won't be using that.
I placed one in the headphone out on my old television and paired with a recent set of Sennheiser wireless headphones and can confirm there was no lag. Your experience may differ!
For the most part I use the on old portable music devices so I can use wireless headphones with them and due to their compactness they add very little in the way of size and weight to what I carry.
The instructions are fairly clear and there are a few other neat features in regards to selecting and showing what codec is being used through coloured lights. I would mention that I haven't noticed an auto off feature (I may be missing this) so it's best to remember to turn it off after use to avoid draining the battery.
Great little device.
5.0 out of 5 starsI liked this product so much I have two!Fantastic product, great performance!
Reviewed in the United Kingdom on 12 December 2024
This device is super simple to use and I have not had any issues connecting them either as transmitters or receivers. In fact I recently used one as a transmitter on an old sound system to transmit to another attached to an old speakers system. Easy peasy!
Simply holding down the number one button sets it to pairing mode and anything currently in pairing mode near it will connect. After that it connects automatically when both it and the paired device are turned on.
I've not tried to use dual transmission/reception mode so can't say how that might work, but I hazard a guess most people won't be using that.
I placed one in the headphone out on my old television and paired with a recent set of Sennheiser wireless headphones and can confirm there was no lag. Your experience may differ!
For the most part I use the on old portable music devices so I can use wireless headphones with them and due to their compactness they add very little in the way of size and weight to what I carry.
The instructions are fairly clear and there are a few other neat features in regards to selecting and showing what codec is being used through coloured lights. I would mention that I haven't noticed an auto off feature (I may be missing this) so it's best to remember to turn it off after use to avoid draining the battery.
Great little device.
Images in this review
- Reviewed in the United Kingdom on 18 July 2023Colour Name: BlackVerified PurchaseThe 1Mii Transmitter was just what I needed for a recent long haul flight, delivery was lightning coming the same day as ordering just in time for my flight the following day.
Having this device meant I was able to use my noise cancelling AirPod Pros for every part of my travel, wirelessly with the device in transmit mode. That meant I was able to sit back and relax on the plane and watch the inflight films with my wireless headphones perfectly. It did sound weird at first, with audio only coming out of one side of the headphones and thought it was because I didn't have the 2 prong airplane adapter, however all it took was me double clicking the play button on the 1Mii device, to switch the audio quality as it mentions in its instruction manual, that solved the problem instantly and suddenly sounded fantastic.
It also came in super handy when we found ourselves in a car that didn't have bluetooth connectivity, and just a 3.5mm AUX input, as we flipped the switch on the device from transmit (TX) to recieve (RX), allowing us to play music from our phone, to the 1Mii device and into the cars 3.5mm AUX port.
It's a great little gadget to have in your arsenal when travelling and could save the day in a couple of situations I can think of. It's really lightweight and takes up almost no room in my bag sat with my chargers and the like. It's a rechargable device, I made sure it was fully charged before I left, and charged it once while away before the flight back, and I encountered no issues with the battery so it last a good while on a charge.
- Reviewed in the United Kingdom on 10 July 2023Colour Name: BlackVerified PurchasePaid close to 30 for an AptX enabled 5.3 transmitter according to the listing.
- However I received a 5.2 Bluetooth device ML300
- EarFun Air Pro 3 will not engage in AptX mode no matter what I have tried.
- Annoying auto off function, there is no waking from it, you physically need to turn the little switch to "off" then back to TX or RX as needed. If you plan to hide the device behind a monitor or TV you should plan to reach for it Every Time you want to use it!
- Inconsistent connectivity when pairing with a second pair of headphones. One of the pairs will lose all sound, although in theory connected, until multiple restarts of the device. Plug And Pray!
- Latency! Massive detectable latency when watching movies (lip-sync on videos is horrible) or playing games (you press a game button two times before hearing the first sound from the first action).
Unfit for purpise and I regret making it.
Paid close to 30 for an AptX enabled 5.3 transmitter according to the listing.
- However I received a 5.2 Bluetooth device ML300
- EarFun Air Pro 3 will not engage in AptX mode no matter what I have tried.
- Annoying auto off function, there is no waking from it, you physically need to turn the little switch to "off" then back to TX or RX as needed. If you plan to hide the device behind a monitor or TV you should plan to reach for it Every Time you want to use it!
- Inconsistent connectivity when pairing with a second pair of headphones. One of the pairs will lose all sound, although in theory connected, until multiple restarts of the device. Plug And Pray!
- Latency! Massive detectable latency when watching movies (lip-sync on videos is horrible) or playing games (you press a game button two times before hearing the first sound from the first action).
Unfit for purpise and I regret making it.
Images in this review
- Reviewed in the United Kingdom on 9 October 2023Colour Name: BlackVerified PurchaseThis bluetooth device is so easy to use and set up. Has a switch to choose between Tx, Rx and Off. The device is so small and compact it's great. Pairing to my headphones is so straight forward and just takes around 10 seconds. Very impressed. I use it with my TV to listen to music louder than my wife likes. It doesn't affect the operation of my Bose TV sound system, so she can select her own volume level. Also good for listening to the TV late at night while the rest of my family are sleeping. Works really well and very easy to use and charge up. Recommended.
Update: Having used this for a couple of months, it works fine but I just wish the batteries lasted longer than 10 hours. My headphones last 68 hrs between charges and I'm having to charge this little unit quite often for around 2.5 hrs. Otherwise I love it.
- Reviewed in the United Kingdom on 11 July 2023Colour Name: BlackVerified PurchaseFunctions ok with the tv (Sony Bravia) but absolute nightmare to pair with the 'phones. Even then, it won't stay paired. Because you're forever behind the tv fiddling with the buttons, audio lead should be longer so you can reach. Good points: usually in synch, no speech delay. Sound quality ok.
Top reviews from other countries
- BuyerReviewed in the United States on 22 September 2021
5.0 out of 5 stars This is the 1Mii transceiver to buy! Easy setup and priced right.
Review of 1Mii ML301 wireless transceiver.
This item is both a receiver and transmitter and I only tried the receiver. There is a switch on the front of the ML301 which allows you to select the receiver, off, or the transmitter. Pairing was easy with my cell phone. Hold the ML301 pairing button for about 2 seconds and this puts the ML301 into paring mode.
The ML301 comes in a small box with a manual, a 3.5mm music connection cable and a charging cable. If you plan to connect this to a stereo receiver, then you may desire to purchase an inexpensive adaptor cable with RCA stereo plugs. This is the big plus for old receivers which lack blue tooth as you can then connect the ML301 and stream from your favorite streaming music source via your cell phone. The range is good at about 30 feet, however, it is best to have the cell phone in the same room with the ML301. The ML301, when it lost the blue tooth connection, will not auto-reconnect so you will need to reconnect on your cell phone. It seems that most of these gadgets on the market will need to be reconnected. The ML301 did return to the highest codec I had been using when I reconnected.
There are four blue tooth audio codecs (codecs are for Sony, Apple and others) on the ML301: aptX-HD, aptX, AAC and SBC. Your cell phone must be capable of sending aptX-HD (most newer cell phones do this) in order for the ML301 to receive the codec aptX-HD which is the highest codec for the ML301 at a blue tooth audio sample rate of 44.1 bits and a blue tooth audio bits per sample rate of 24 bits/sample which is better than CD quality. Unless you listen closely, there will not be a significant difference in the four codecs offered. I streamed aptX-HD and used my phone's "Developer Options" in order to confirm the codec aptX-HD.
The ML301 does have an internal battery which lasts for many hours. So this could be a big plus when you bring the ML301 along with your portable devices as it can connect to other portable devices such as speakers, headphones, iPod etc.
In summary, the build quality is excellent. Setup was easy. The codec selections and range are what I would be looking for in a wireless transceiver. I would recommend this 1Mii ML301 as a great purchase.
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JasperReviewed in the Netherlands on 9 November 2023
5.0 out of 5 stars Voldoet aan de eisen
Voldoet aan de eisen. Kan via mijn draadloze oordopjes nu luisteren als ik die via bluetooth verbind met de 1mii in een 3,5 mm jack aansluiting. Heb tot nu toe ruim acht uur geluisterd en hij was nog niet leeg, dus ben tevreden voorlopig.
Koppel proces was simpel.
- Mark MuellerReviewed in Australia on 8 November 2024
5.0 out of 5 stars Great blue tooth receiver.
Using it for bluetoothing signal to headphones for metal detection. Seems to be working OK for the couple of times I've used it.
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Ernst VitakReviewed in Germany on 2 March 2025
5.0 out of 5 stars Gutes Produkt
einfache Installation, problemloser Betrieb
- Andre MartinesReviewed in the Netherlands on 6 December 2021
5.0 out of 5 stars Do as it promisses
works properly