Lexie B3 Powered by Bose vs. Phonak Audéo Infinio Ultra

Lexie B3 OTC hearing aids deliver Powered by Bose sound, Bluetooth streaming, IP68 durability, and app-based personalization for clearer conversations.

Phonak’s Infinio Sphere delivers genuinely standout speech clarity in loud, noisy places thanks to its DEEPSONIC “Sphere mode,” but you’ll trade some discretion and may wrestle with fit or Bluetooth pairing to get that top-tier performance.

Lexie B3 achieved a SoundScore of 4.7/5 and a SoundGrade of A in HearAdvisor lab testing. It ranked #1 of 65 OTC Hearing Aid devices tested. The OTC Hearing Aid category average SoundScore was 3.68/5.

Phonak Sphere Infinio Ultra achieved a SoundScore of 4.9/5 and a SoundGrade of A in HearAdvisor lab testing. It ranked #3 of 39 Prescription Hearing Aid devices tested. The Prescription Hearing Aid category average SoundScore was 4.19/5.

Lexie B3 hearing aids offer excellent protection from moisture and debris with an IP68 rating. The portable charge case also appears well built and should easily hold up to daily use.

Phonak Audéo Sphere Ultra have an excellent build quality with a robust, portable charging case and a high ingress rating of IP68.

B3 offer an impressive 32 hour battery life per charge, which is more than many products on the market. The portable charging case also offers up to 3 additional charges before needing to be plugged in. As such, we found the overall battery offering excellent.

Ultra is designed to deliver all-day use, with battery-life figures of up to 56 hours under ideal conditions (i.e., in quiet with no streaming) and about 10-11 hours when Sphere mode is continuously engaged. They take 3 to 4 hours to recharge, and a 30-minute quick charge can provide an additional 6 hours of use.

Lexie B3 are Bluetooth compatible with both iOS and Android devices, allowing for wireless app control, audio streaming, and hands-free calling.

Phonak Infinio Ultra are compatible with both iOS and Android, offering wireless audio streaming and hands-free calls. Pairing is now easier directly from your phone's Bluetooth menu.

The Lexie app has a user-friendly interface and modern, appealing design. It includes practical features like volume control and a tone balance. We especially liked that B3 now includes a hearing assessment to better personalize the audio performance to your hearing.

I found the MyPhonak Hearing Aid app easy to use with many useful features, including health and fitness tracking.

I found B3 very comfortable, and the flexible earwires easily molded to my face which helped provide good retention and speaker placement in my ears.

Phonak Audéo Sphere Infinio Ultra were extremely comfortable and lightweight in my ears. In general, hearing care providers can make numerous physical changes to prescription hearing aids to improve comfort.

B3 are relatively small and have a modern receiver-in-canal design. One potential downside is that they are currently only available in a mat grey color.

Phonak's new Audéo Sphere Infinio Ultra model shares the same notably larger size as the original Phonak Infinio Sphere. This is needed for its increased AI processing. While the larger size may be more noticeable, Sphere Ultra remains comfortable, and your provider should have no trouble adjusting the fit to your preference.

Lexie B3 has a value score of 4.5/5 based on lab performance and public display price.

Phonak Sphere Infinio Ultra has a value score of 3.5/5 based on lab performance and public display price.

I did not run into any issues while using B3 or the Lexie mobile app. First-time users may need some practice to get accustomed to inserting the receiver-in-ear style properly.

Infinio Ultra are easy to use and adjust using either the large multi-function button or MyPhonak app. I had no issues making adjustments with either.

B3 are over-the-counter hearing aids and are designed to be fit without a hearing care provider. However, Lexie offers remote care which includes both technical and hearing support from their team of Lexie Experts for the lifetime of your hearing aid.

Prescription hearing aids like Infinio Sphere Ultra are fit by hearing care providers so you should receive quality care. The MyPhonak app also opens the possibility for remote programming and virtual follow-up appointments.