Auracast transmitter tests

Avantree Auracast 4HA is default works well with hearing aids. If you mainly need it to use with hearing aids, then 4HA is the one you need.

Avantree Audikast 4 review:

This is easily the best Auracast transmitter I have tried to date, the most flexible and the easiest to use. It works reliably with my Jabra Enhance Pro 20 hearing aids, Samsung Buds 3 Pro and regular Bluetooth headphones, and it makes it easy to switch quickly between them. The indicator lights show what you are transmitting and whether the device is receiving an audio signal. It has impressive range, possibly thanks to the adjustable 7cm external antenna it sports.

It also has a volume control, which works for headphones, but Jabra only allows Auracast volume from any source to be adjusted through the streaming slider in their phone app.

It identifies itself as Avantree Audikast 4-xxxx to the helper app, although the Jabra app only displays up to 20 characters, losing the xxxx unique identifier. The Samsung helper app does show the full ID string.

There does not seem to be any provision to assign a PIN for privacy.

It does not appear to be able to broadcast both 24Khz and 48Khz simultaneously, since you need to select the Auracast signal you want to use.

Avantree now also lists an Audikast 4HA, which was not there at the time I pre-ordered, but the Audikast 4 I received works just fine with my hearing aids.

Hi @jwerner, glad to hear Audikast 4 is working well for you!
Just to note: with the upcoming Sept firmware update, you’ll be able to set your own password for privacy and also rename/change the unique ID so multiple units are easier to tell apart.

So… is there a winner yet? Audikast 4 or Homespot ba210 v2. Homespot’s a bit cheaper.

I don’t know if I missed it, but what does the 4HA bring to the table?

Audikast 4HA is optimized for hearing aids so users does not need to switch back and forth. Also there are some advanced features available for customization.

What improvements over the TV streamer did you notice? How is latency? With my tv streamer 2 I find some apps have latency and some dont and its irritating having to keep adjusting the streamer latency. Is latency adjustable or needed on the device you are using? Tnx

@MarkS said:

The main improvements are a better sound quality, hard to quantify but the sound felt clearer.

That is the main feature of LEA/Auracast. You get High quality audio at low bit rates.

For us HOH folks, we really can’t enjoy CD quality sound to it’s fullest, but the LC3 codec used in LEA can reach close to that level.

This discussion is very useful. The Space Foundation’s Discovery Center museum in Colorado Springs is planning on piloting the use of Auracast in our museum and is searching for the “best” low cost transmitter that can be connected to our existing wireless mic and PA system. We would like to “easily” be able to 1) name the Auracast transmitter signal (so guests could easily pick the Auracast “channel” they want to hear on their compatible hearing aids or headsets/earbuds when different programs are being transmitted about different special areas in the museum), 2) that we can easily set the transmitted volume for a “general” audience, and 3) we can set a simple PIN access code so when we have special “up charge” activities, we can control audio access. If this pilot program proves to be easily implemented and maintained, our next step will be to see about implementing the Auracast system in the Spring at our annual Space Symposium which is attended by several thousand people from all over the world. Our goal, initially, is to help guests who already have Auracast compatible hearing aids or headsets hear presentations better, but primarily is to foster the awareness of and use of Auracast to a wider audience. Right now, one of our docents has demonstrated the Auracast system using his personal HomeSpot BA210 v2 transmitter and Jabra Enhance Pro30 hearing aids, so we know the system can work, but are still looking at other transmitters to make set up easier in multiple venues.

Hi @Lour,

Thanks for sharing — your project sounds great.
Everything you listed (custom broadcast name, volume control, simple PIN access) is supported in our multiple Auracast transmitters, so they should fit your needs well.

We’d be happy to send you a free unit to test at the museum. 2. Auracast & LEA Devices – Avantree13
If you’re interested, just message me and we’ll arrange it.

Hi @jwerner, regarding the comment that it only broadcasts while receiving an audio signal from the host — meaning it disconnects when switching programs (e.g., between YouTube videos) — this is not true for the FlooGoo FMA120. It includes an option that lets users choose whether the broadcast should continue even when USB audio is paused.

We designed this as a switchable option based on suggestions from our direct testing collaboration with Starkey.

This feature was added in April 2025, in case some users haven’t noticed it.

Release 1.1.1.8, 11-04-2025

1. Implement continuous LE Audio/Broadcast streaming to address issues that occur during pause, track skipping, or seeking with certain media players.

We also offer a sister version, the FMA12111, which includes both 3.5 mm and USB-C inputs and shares the same feature set as the FMA120. The input switch appears automatically in the FlooCast app when an FMA121 is detected.

Users can choose either LE Audio (unicast) or Auracast (broadcast), set latency preferences, and adjust other settings such as broadcast name and keys. The major features have been available since we launched the FMA120 in 2023, with latency preference added in 2025.

The FlooGoo FMA121 will be available on Amazon US in about two weeks. Some customers in Australia have already received their FMA121 units from Amazon AU4.

By the way, the FMA120 is scheduled for deployment in a major international public venue in January 2026.

Thank you for your help.

What is the range of the new FMA121 box, 100m radius?

Thank you

It’s built on the same core platform as the FMA120, so the performance should be very similar — potentially even slightly better due to its slightly larger form factor. For reference, the FMA120 has achieved over 250 meters in our field tests and has been deployed in a 542-seat lecture theatre at an Australian university.