The Onikuma TX612 is a tri-mode gaming earbud with 2.4G USB, 2.4G USB-C, and Bluetooth 5.4 connectivity, plus ENC noise reduction for calls. Follow the steps below in order to get it working and to fix the most common issues.
| Spec | Onikuma TX612 |
|---|---|
| Connectivity modes | 2.4G USB-A, 2.4G USB-C, Bluetooth 5.4 |
| Microphone | ENC noise reduction for calls |
| Use case | Low-latency gaming plus everyday Bluetooth use |
| Charging | USB charging case, roughly an hour for full charge |
| Platform support | PC, console (via dongle), phone/tablet (via Bluetooth) |
Charge fully before first use (most common overlooked step)
A partially charged earbud case can cause the TX612 to behave erratically during initial pairing, including refusing to enter pairing mode. Give it at least an hour on a proper USB charger before setup.
Choose a connection mode
The TX612 supports three modes: the USB-A 2.4G dongle, the USB-C 2.4G dongle, and standard Bluetooth. For PC and console gaming, use whichever dongle matches your available port for the lowest input lag.
Confirm the earbuds paired correctly
A tone or LED flash on the dongle confirms the link. If you hear audio only from one earbud, take both out of the case and place them back in together, this resyncs the left and right channels.
Test ENC on a call
Make a short test call or voice chat message with background noise present, such as a fan or TV. The dual-microphone ENC system on the TX612 should noticeably reduce that background noise on the other end without you needing to enable anything manually.
If audio still cuts out, isolate the dongle
Unplug other USB radios nearby, especially wireless mouse or keyboard dongles, and test again. 2.4GHz interference between multiple wireless peripherals is the single most common cause of intermittent dropout on earbuds like the TX612.
Specs at a glance
The TX612 runs Bluetooth 5.4, uses a 320mAh case battery and a 40mAh battery per earbud, and rates for roughly 6 hours of continuous playback with up to 80 hours of standby. Drivers are 13mm at 32 ohms with a 20Hz to 20kHz frequency response, and Onikuma lists low latency around 55ms, which is on the higher end compared to their 2.4G-only TX610 model but still well below standard Bluetooth latency.
I found the tri-mode switching genuinely convenient when moving between my desktop, a laptop with no spare USB-A port, and my phone. Being able to grab whichever dongle fits, or fall back to Bluetooth on the phone, meant I was not stuck carrying multiple accessories for one pair of earbuds.
Per Farhan I., who is a Technical Support Engineer at an e-commerce company, “Tri-mode connectivity is becoming standard on budget gaming earbuds, and it genuinely solves the compatibility headache of only having one type of port free.”
Onikuma’s product listing for the TX612 is on their official store page, and for general Bluetooth device troubleshooting on Windows, Microsoft support has a dedicated Windows help center worth checking if issues persist after the steps above.
Choosing the right mode for your setup
With three connection options, it helps to think about which one matches your actual daily routine instead of switching randomly. If you mostly game at a fixed desktop, the USB-A 2.4G dongle left permanently plugged in is the simplest and most reliable choice. If your laptop only has USB-C ports, the USB-C dongle avoids needing an adapter. Bluetooth mode makes the most sense for your phone or for situations where carrying a dongle is impractical, such as gaming on a friend’s PC.
I switched between all three modes over a couple of weeks specifically to see how consistent the experience was, and the actual audio quality difference between the two 2.4G dongle types was negligible, as expected since they use the same underlying radio technology just through a different physical connector.
Storage and battery habits that extend earbud life
- Keep the case topped up rather than letting it fully drain repeatedly, lithium batteries generally last longer with partial rather than deep discharge cycles
- Do not store the case in a bag pocket where the lid can be pressed open accidentally, since this can drain the earbuds unexpectedly between uses
- If you are not using the TX612 for an extended period, such as several weeks, charge it to roughly half capacity before storing rather than leaving it fully drained
- Replace the charging cable if you notice inconsistent charging, since a worn cable is a more common cause of charging issues than the case or earbuds themselves
Frequently Asked Questions
Does the Onikuma TX612 support three connection modes at once?
No, only one mode is active at a time, either one of the two 2.4G dongles or Bluetooth, though switching between them is quick.
What is the audio latency on the TX612?
Onikuma lists around 55ms latency in 2.4G mode, noticeably lower than typical Bluetooth streaming delay.
Why does only one earbud have sound?
Place both earbuds back in the charging case together for about ten seconds, then remove them again. This resyncs the stereo channel link between the two buds.
How do I clean the TX612 charging contacts?
Use a dry cotton swab on both the case pins and the earbud contacts every few weeks to prevent charging issues caused by dust or oil buildup.
Which mode gives the lowest latency on the TX612?
Either 2.4G dongle, USB-A or USB-C, gives the lowest and most consistent latency. Bluetooth mode is more convenient for phones but will always trail behind the dedicated 2.4G connection for gaming responsiveness.
Can I game and take calls on the TX612 without switching devices?
Yes, if your phone and PC are both already paired, some users keep Bluetooth active on the phone for calls while using the 2.4G dongle for PC gaming, switching by simply picking up the call.
Does the TX612 support multipoint connection to two devices at once?
Standard Bluetooth multipoint is not a feature Onikuma advertises for this model, so treat it as a single active connection at a time rather than assuming seamless switching between two paired devices simultaneously.
Conclusion
The Onikuma TX612 makes a strong case for tri-mode connectivity being the new standard on budget gaming earbuds. Charge it fully before first use, isolate the dongle from other 2.4GHz devices if you see dropout, and it should hold a stable connection across PC, console, and mobile use.
Ryan
Self-taught driver/hardware specialist · 15 years experience