Wireless headphones are great—until you want to use them with a source that lacks Bluetooth, such as an in-flight entertainment system or an older TV or projector. A Bluetooth transmitter solves this problem by making any AV device with a headphone jack (or other type of audio output) compatible with Bluetooth.
The best Bluetooth transmitter you can buy for use on the go is 1Mii’s ML300, while our favorite for connecting to your TV or projector is 1Mii’s B03.
This small, portable transmitter sounds as good as any other model we tested, and it actually works as advertised, which isn’t a given in this category.
The B03 integrates easily into your existing home theater setup and offers the lowest latency of any transmitter we’ve tested.
When paired with supported devices, this essential codec helps to nearly eliminate lip-sync lag while watching videos.
Multi-device pairing We considered only transmitters that can connect with at least two devices simultaneously. Logical controls We preferred models that make the pairing and switching processes as intuitive as possible. Measured resultsWe used test equipment to measure each transmitter’s latency, frequency response, and sound-output level to assess performance.
This small, portable transmitter sounds as good as any other model we tested, and it actually works as advertised, which isn’t a given in this category.
The 1Mii ML300 offers everything we want to see in a portable Bluetooth transmitter: a solid, 10-hour battery life; support for the aptX Low Latency Bluetooth codec (to improve the sync between audio and video); and the ability to pair to two sets of headphones at once. It matches the sound quality of the other portable models we tested and produces about the same amount of audio lag, but it’s easier to use.
The ML300 is small and light enough for you to carry it to the gym or while traveling, and it comes with everything you need to connect to your audio source.
The B03 integrates easily into your existing home theater setup and offers the lowest latency of any transmitter we’ve tested.
If you’re looking for a more permanent setup to transmit audio wirelessly from your TV, projector, or other home audio device, go with 1Mii’s B03. Much like the ML300, the B03 supports aptX Low Latency, multi-device pairing, and a receiver mode.
It’s better than other TV-based models because it has the lowest latency (aka lag) of any transmitter we’ve tested when paired with aptX Low Latency headphones, which helps to eliminate lip-sync issues when watching TV. The transmitter passes audio through to a soundbar (or other external speakers), and you can broadcast the Bluetooth signal while also listening from your TV.
The 1Mii B03 is larger than the ML300 and lacks a battery, but we don’t think those drawbacks are huge concerns for a home-based transmitter.
