Unitron Moxi B-312 RIC Accessories & Compatibility Guide | Japebo
If you use Unitron Moxi B-312 RIC hearing aids, choosing the right accessories (like domes, receivers, and wax protection) is the difference between great sound and constant frustration. This guide explains what typically fits the Unitron Moxi B-312 RIC, how to identify what you need, and how to avoid the most common ordering mistakes—so you can buy with confidence.
What the Unitron Moxi B-312 RIC is (and why accessories matter)
The Unitron Moxi B-312 RIC is a Receiver-in-Canal (RIC) hearing aid. In a RIC system, the small speaker (the receiver) sits in the ear canal and connects to the hearing aid via a thin wire. Because the receiver and the ear-end parts are exposed to earwax and moisture, the correct accessories are essential for:
Sound quality (clear audio, stable volume)
Comfort and fit (secure seal without pressure)
Reliability (wax protection helps prevent receiver blockage)
Accessory compatibility for Unitron Moxi B-312 RIC: what to check first
Before you choose accessories for your Unitron Moxi B-312 RIC, confirm these three points. They determine compatibility more than the hearing aid name alone:
1) Receiver type and power level
Receivers come in different power levels (e.g., standard vs. power) and lengths (wire length). The correct match depends on your hearing loss and ear size. Receivers are not universal—a receiver must match the Unitron platform/connector and the correct side (left/right).
2) Dome system and size
Domes attach to the receiver and come in different styles (open, closed, power) and sizes (typically measured in mm). A dome that is too small can whistle (feedback) or fall out; too large can feel blocked or sore.
3) Wax protection (wax guards/filters)
Most RIC receivers use a wax protection system at the tip. Using the correct wax guard type helps prevent weak sound, dropouts, or complete loss of sound caused by wax blockage.
Common Unitron Moxi B-312 RIC accessory types (and what they do)
Domes
Domes are soft ear tips that sit in the ear canal. Typical options include:
Open domes: more natural, airy sound; often used for mild to moderate loss.
Closed domes: more bass and less leakage; can reduce feedback.
Power domes: maximum seal and retention; often used for greater amplification needs.
If you’re unsure what you have today, remove the dome and compare its shape (open vents vs closed) and approximate diameter. Many users also find the size printed on packaging if they still have it.
Receivers (speaker units)
Receivers are the speaker modules on the wire. They are a frequent replacement part because they are the most exposed component in a RIC design. Typical reasons to replace a receiver include intermittent sound, reduced volume (after changing wax protection), or no sound in one ear.
When choosing a replacement receiver for Unitron Moxi B-312 RIC, make sure you match:
Left vs right
Wire/length
Power level
Connector/platform compatibility (Unitron-specific)
Wax guards / wax filters
Wax guards protect the receiver opening from earwax. If your sound becomes weak, dull, or cuts in and out, changing the wax filter is one of the first troubleshooting steps (after checking the battery and cleaning the dome).
Tip: if you’re changing wax guards very frequently, consider whether you need a different dome style for better ventilation, or whether moisture management (drying box) would help.
Retention locks (sports locks)
If your hearing aid or receiver wire tends to slip out, a retention lock can improve stability—especially during exercise or when wearing glasses/masks.
Batteries (size 312)
The “312” in Unitron Moxi B-312 RIC refers to the battery size used in this model. If you experience short battery life, confirm you are using the correct size and that the battery door closes cleanly. Store batteries in a dry place and let the sticker tab sit for about a minute after removal before inserting (to allow full activation).
How to choose the correct accessories for your Unitron Moxi B-312 RIC
Use this simple checklist to choose correctly:
Start with what you currently use: match dome style and size if you were happy with comfort and sound.
Identify receiver details: look for markings on the receiver/wire (often includes length/power and side).
Address the problem you’re trying to solve:
Whistling/feedback → try a better seal (closed or power dome) or check fit.
Occluded “blocked” feeling → try a more open dome style or smaller size.
Weak sound → change wax guard; replace dome; then consider receiver replacement if needed.
If you’re between two dome sizes, many users prefer the slightly larger size for stability—unless it causes pressure or soreness.
Common problems with Unitron Moxi B-312 RIC (and quick fixes)
No sound or very weak sound
Replace the battery (size 312).
Change the wax guard.
Replace the dome (domes can clog or harden over time).
If the issue persists in one ear: the receiver may need replacement.
Whistling (feedback)
Check that the dome is pushed fully onto the receiver.
Try a closed or power dome for a better seal.
Make sure the receiver wire sits correctly and the aid is fully inserted.
Discomfort or irritation
Try a smaller dome size or a different dome style.
Replace old domes (worn silicone can irritate skin).
Consider a retention lock for stability without forcing a tight dome.
Buy Unitron Moxi B-312 RIC accessories online
At Japebo, you’ll find compatible accessories for Unitron Moxi B-312 RIC—including ear domes, receivers, wax protection, retention locks, and batteries. If you’re unsure what to choose, start by matching the parts you currently have (style/size/markings) and replace one variable at a time.
FAQ: Unitron Moxi B-312 RIC accessories
Are all Unitron Moxi accessories compatible with the Moxi B-312 RIC?
No. Compatibility depends on the receiver platform/connector, receiver power level, and dome/wax guard system. Always match the exact receiver type and ear-end system used on your device.
How often should I change domes and wax guards?
Wax guards are typically changed whenever sound becomes weak or blocked, and domes should be replaced regularly for hygiene and best fit (many users replace domes every few weeks to months depending on wear and earwax).
How do I know my dome size?
If you don’t have the packaging, compare the diameter to your current dome and choose the closest match. If you experience feedback or the dome slips out, you may need a larger size or a more closed style.
What battery does the Unitron Moxi B-312 RIC use?
It uses a size 312 zinc-air hearing aid battery.
When should I replace the receiver?
If changing the battery, dome, and wax protection does not restore sound—or if sound is intermittent in one ear—the receiver is a common next replacement.