CROS Instruments

Rexton CROS Instruments Compatibility Guide & Buying Help | Japebo

If you’re looking for Rexton CROS instruments, you’re typically dealing with single-sided hearing (profound loss in one ear and better hearing in the other). This guide explains what a Rexton CROS system is, how compatibility works, how to choose the right option, and what to check before you buy—so you can be confident you’re selecting the correct Rexton CROS instrument for your hearing aid setup.

What are Rexton CROS instruments?
A Rexton CROS (Contralateral Routing of Signal) instrument is a small wireless device worn on the ear with little or no usable hearing. It picks up sound from that side and transmits it wirelessly to a compatible Rexton hearing aid worn on the better-hearing ear. The goal is to reduce the “head shadow” effect—so voices and sounds coming from your poorer side are easier to hear.
If you have hearing loss in both ears (but one ear is much worse), you may need BiCROS instead. In a BiCROS setup, the receiving hearing aid also amplifies sound in the better ear while receiving the transmitted signal from the CROS side.

Rexton CROS compatibility: what you need to know
Compatibility is the most important factor when buying a Rexton CROS instrument. A CROS device must match the wireless platform/generation of the Rexton hearing aid that will receive the signal. In practice, that means a Rexton CROS instrument is usually compatible only with specific Rexton hearing aid families released on the same technology platform.
Before purchasing, confirm:

Your Rexton hearing aid model (exact name and generation)
Whether your setup is CROS or BiCROS (your hearing care professional can confirm)
Fitting/programming support (CROS systems typically require pairing and programming in fitting software)

Which hearing aids work with Rexton CROS instruments?
Rexton CROS instruments work with specific compatible Rexton hearing aids on the receiving ear. Because platform compatibility varies by generation, the safest approach is to match your CROS instrument to your existing Rexton hearing aid family.
If you’re unsure what you have, look for:

The model name on your paperwork/invoice
The model information in the app (if you use a Rexton app)
The serial/model code on the device (your clinic can identify it quickly)

If you share your exact Rexton model (and year or platform name if you know it), it becomes much easier to confirm the correct CROS instrument.

How to choose the right Rexton CROS instrument
Use the checklist below to avoid ordering the wrong product:
1) Confirm CROS vs BiCROS
CROS is for one unaidable ear and one normal/near-normal ear. BiCROS is for one unaidable ear and one aidable ear. The hardware can differ depending on system design and hearing aid pairing.

2) Match technology generation
Choose the Rexton CROS instrument that is designed for the same generation/platform as your receiving Rexton hearing aid. Mixing generations usually means it won’t pair or won’t function correctly.

3) Choose the correct side (left/right)
CROS instruments are worn on the poorer-hearing side. Make sure the device you buy matches the ear side you’ll wear it on.

4) Consider style and power needs
Depending on your Rexton system, CROS instruments may be available in certain form factors (for example, receiver-in-canal styles). Your clinic can confirm what’s supported for your hearing aid family.

Common issues with Rexton CROS systems (and what to check)
CROS not connecting / dropping out

Check that both devices are charged (or have fresh batteries) and restarted
Confirm the devices are paired correctly (often requires your fitter)
Strong wireless interference can cause dropouts—try another environment

Sound is weak or not noticeable

Verify you’re in the correct program/mode (your fitter may set a dedicated CROS program)
Ask your clinic to check CROS balance and microphone settings
Make sure the receiving hearing aid is working properly (wax blockage can reduce output)

Unclear speech from the CROS side

Ensure the CROS device microphones are clean and unobstructed
Have your fitter verify routing settings and noise management configuration
Remember: CROS helps access sound from the poorer side, but it does not restore localization

What to buy with Rexton CROS instruments
Depending on your Rexton hearing aid style, you may also need compatible maintenance and wear parts to keep performance stable. Common categories include:

Wax protection (helps prevent receiver blockage)
Domes or earmolds (fit and comfort; impacts sound)
Receivers (if you use RIC devices and the receiver is replaceable)
Cleaning tools (to reduce microphone and sound outlet debris)

If you’re unsure which parts match your Rexton model, identify your hearing aid family first—then select accessories specifically listed for that generation.

Buy Rexton CROS instruments online (with the right checks)
When shopping for Rexton CROS instruments, confirm the exact compatible platform and side (left/right) before ordering. If you can’t confirm compatibility from your paperwork, your hearing care professional can identify the correct match quickly using the model number or serial information.
Once you know your Rexton hearing aid model and platform, you’ll be able to choose the correct CROS instrument confidently and avoid return delays due to mismatched generations.

FAQ: Rexton CROS instruments
Do I need a Rexton hearing aid to use a Rexton CROS instrument?
Yes. A Rexton CROS instrument must transmit to a compatible Rexton hearing aid on the better ear. Cross-brand compatibility is generally not supported.

What’s the difference between CROS and BiCROS?
CROS routes sound from the poorer ear to the better ear (which does not need amplification). BiCROS routes sound from the poorer ear to a hearing aid that also amplifies the better ear.

Will a Rexton CROS instrument work with any Rexton hearing aid?
Not necessarily. Compatibility typically depends on the technology generation/platform. Always match the CROS instrument to your hearing aid family.

Which side should the CROS instrument be on?
The CROS instrument is worn on the poorer-hearing (unaidable) side. The receiving hearing aid is worn on the better-hearing side.

Do Rexton CROS instruments require programming?
Usually, yes. Pairing and fine-tuning are typically handled by a hearing care professional to ensure stable connection and balanced sound routing.