1Mii 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

Very good device, I use it mainly for connecting my old hi fi to my phone via Bluetooth. It also served me well on a flight to florida, to connect my Bluetooth headphones to the in flight entertainment. Using the headphone jack cable supplied.I know I'll also use it in the future to connect two kids headphones to one iPad.Charge lasts a decent time.

I 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.

The ML300 is a small lightweight Bluetooth transceiver that can conveniently be plugged into headphones as a receiver with the short cable supplied (if the headphones have a 3.5mm jack socket) and left hanging. You wouldn't know it is there. Headphones with an attached lead obviously are plugged into the unit directly. The lack of volume controls is not as convenient as having some when remote from the sound source but this may be common amongst other Bluetooth transceivers. Initially connecting to a Bluetooth transmitter and negotiating codecs was reasonably fast and reconnecting was almost instantaneous. There is an audio delay and the receiver would only use SBC, AptX, AptX HD and AptX Adaptive according to indicators on the transmitter it was paired with. I couldn't get it to use the low latency AptX LL codec. The codec used by the unit can't be manually selected but by double pressing a button it can be switched to use AptX HD. The audio delay seemed to be the same with HD as without it so AptX LL is definitely not used with my unit. However, I found that lipsynch watching TV was acceptable, and I hate it when the audio and video aren't synchronised.As a transmitter, once again after the initial delay in negotiating codecs the ML300 reconnected almost instantly. Connecting to a receiver that has the ability to choose the codec manually I found that as with using the ML300 as a receiver I couldn't select AptX LL. Consequently there is an audio delay and slight lipsynch issue watching TV. But I found it acceptable and not too annoying. If you have the TV sound on and aren't using effective noise cancelling headphones then the echo produced between the speakers and headphones could be annoying. Once again there is no volume control and adjusting the volume on the equipment will affect the volume level from speakers if they are on at the same time. I paired the ML300 with two pairs of headphones and had sound in both pairs with no problemsBluetooth communications are by nature are problematic with latency, and AptX LL does a very good job of overcoming this. Unfortunately I couldn't get the ML300 to use AptX LL. Whether this is the fault of the ML300 or not I couldn't determine. I have read that AptX Adaptive is the codec that will eventually supercede the others as it encompasses them and since the ML300 can handle Adaptive it is sort of future proofed. I also read that AtpX Adaptive transmits better audio quality but has a higher latency achieved by AptX LL. If you are only interested in listening to audio then the sound quality transmitted or received by the ML300 is good. It is with my Sennheiser Momentum 4 headphones anyway. If you want the ML300 for watching TV with headphones then like me you may have a slight, but I think acceptable, lipsynch issue.

So 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!

Rarely works I wish I had bought a proper one

Nice and helpful tool

The 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.