Noble Audio FoKus REX5 True Wireless Earbuds

Meet Noble FoKus REX5 — premium true wireless earbuds built around a five-driver tribrid system, Audiodo personalization, Bluetooth 5.4, ANC, and multipoint.

Audiodo personalization and EQ are stored directly on the earbuds, so your tuning stays with REX5 when you switch devices.

Five-driver tribrid architecture with a 10mm dynamic driver, 6mm planar driver, and three balanced armatures per ear. Audiodo hearing personalization with onboard profile and EQ storage. Bluetooth 5.4 with LDAC, aptX Adaptive, AAC, SBC, and multipoint connectivity. ANC and Transparency modes with up to 7 hours of earbud playback and a wireless charging case.

Our Take

FoKus REX5 is Noble's answer for listeners who want true wireless convenience without giving up the sound quality they expect from serious IEMs. It pairs a rare five-driver design with Audiodo personalization to deliver a more dialed-in presentation than typical earbuds, while still keeping daily-driver essentials like ANC, multipoint, and a pocketable charging case.

The combination of three different driver technologies is unusual even among premium true wireless models, but REX5 is more than an exercise in driver count. Noble has paired the acoustic design with personalization that can live directly on the earbuds, making it easier to carry the same sound between your everyday devices.

Audiodo Sound Personalization

Audiodo guides you through a hearing calibration to understand your hearing sensitivity and create a personalized sound profile. A standout advantage of REX5 is that the Qualcomm QCC3091 chipset can store your personalized profile, including EQ, directly on the earbuds.

That means your profile stays active even when the app isn't open, and it can follow you when you switch devices. Audiodo also personalizes each ear individually, which can help compensate for differences in hearing sensitivity between your left and right ears.

Once you've set it up, the personalization becomes part of the REX5 itself rather than something you have to continually manage in the app.

Five-Driver Tribrid Architecture

Packing multiple driver technologies into a true wireless earphone is rare. Each REX5 combines a 10mm dynamic driver, 6mm planar magnetic driver, and three balanced armature drivers.

The dynamic driver provides physical low-frequency weight, the planar driver contributes speed and texture, and the balanced armatures handle articulation and upper-frequency detail. Together, the five-driver system is designed to deliver the separation, control, and scale listeners normally associate with serious multi-driver IEMs.

REX5 has a specified frequency response of 20Hz–40kHz and supports high-resolution wireless options including LDAC and aptX Adaptive on compatible devices.

Features & Daily Use

REX5 is built to move between commuting, office listening, travel, and longer music sessions without requiring a separate set of everyday earbuds.

ANC & Transparency Active Noise Cancellation helps reduce outside noise when you want to focus, while Transparency Mode lets environmental sound back in when awareness of your surroundings matters. A Normal mode is also available when neither is needed.

Multipoint & Charging Multipoint connectivity makes it easier to move between devices such as a phone and laptop. The aluminum 500mAh charging case supports both USB-C and wireless charging, while a 15-minute quick charge provides approximately two hours of playback.

Fit note: Some listeners mention that REX5 has a larger footprint than ultra-compact earbuds. Many find it secure and comfortable for upright listening such as commuting, office use, and travel, but if you have smaller ears or prefer low-profile earbuds that sit nearly flush with the ear, this is worth considering before you order.

Like most premium multi-driver true wireless designs, it is also better suited to upright listening than side-sleeping use.

Technical Specifications

Audio & Wireless

Driver Configuration 1 × 10mm dynamic driver + 1 × 6mm planar magnetic driver + 3 balanced armature drivers per ear

Frequency Response 20Hz–40kHz

Wireless Platform Qualcomm QCC3091

Bluetooth Bluetooth 5.4

Bluetooth Profiles A2DP, AVRCP, HFP

Codec Support SBC, AAC, aptX Adaptive, LDAC

Multipoint Yes

Noise Control Active Noise Cancellation, Transparency Mode, Normal Mode

Connection Distance Up to 10 m

Battery & Charging

Earbud Battery 45mAh per earbud

Charging Case 500mAh

Playback — ANC Off Up to 7 hours

Playback — ANC On Up to 5 hours

Additional Case Playback Approximately 18–25 hours

Earbud Charging Time Approximately 1.5 hours

Case Charging Time Approximately 2 hours

Quick Charge 15 minutes provides approximately 2 hours of playback

Charging USB-C and wireless charging

Power Input 5V / 1A

Design & Construction

Product Type True wireless in-ear headphones

Earbud Construction Aluminum and acrylic

Charging Case Construction Aluminum

App Noble FoKus app with Audiodo personalization and EQ

What's Included

Noble Audio FoKus REX5 true wireless earphones Wireless charging case 10 ear tips USB-C charging cable Storage bag Instruction manual

User Manual

Download the Noble FoKus REX5 Manual (PDF)

Independent Reviews

FoKus REX5 Comparison Review — Aaron X Loud and Wireless

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FoKus REX5 Review — The Absolute Sound

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