Fidioto 4 Pack USB-C to 3.5 mm Jack Adapter, Aux to USB C Adapter for Headphones
Quick take
The Fidioto 4 Pack turns a USB-C device into a 3.5 mm headphone output, and it includes a built-in DAC (up to 16-bit/48 kHz) so you can use your existing wired headphones with compatible USB-C phones and tablets. It is best for people who want a simple plug-and-play backup set, but you should double-check mic and remote expectations because microphone-only devices and certain TRS/OMTP setups are not supported, and Apple EarPods volume adjustment is noted as unsupported.
Pros and cons
Pros
- Built-in DAC with stated support up to 16-bit/48 kHz for USB-C to analog conversion
- CTIA-compatible 3.5 mm female port for standard 3.5 mm headphone plug use
- Comes as a 4-pack, useful if you misplace adapters often or want spares
- Braided cable and durability testing is claimed (15,000 flex) for day-to-day handling
Cons
- Not compatible with OMTPTS and TRS microphone setups, and microphone-only devices are not supported
- Apple EarPods 3.5 mm volume adjustment is specifically called out as not supported
What buyers think
Buyer-review evidence is generally positive on basic usability, with repeated comments that the adapters work as expected and are easy to plug in. Several reviews describe sound quality as at least decent for non-audiophile listening, and others mention that the adapters feel sturdy enough for everyday use. A common theme is practical value from the multi-pack format, especially for keeping extras on hand.
That said, the review evidence is limited in detail about nuanced audio performance (frequency response, distortion, real-world latency) and there is not enough repeated buyer feedback to confidently evaluate advanced features like remote button behavior across many headphone models.
What this adapter is for
If your phone, tablet, or other USB-C device does not include a 3.5 mm headphone jack, this type of USB-C to 3.5 mm adapter lets you continue using wired headphones. This 4-pack format is aimed at buyers who want multiple cables for different places, such as home, work, travel, or for sharing across a household.
Key features that matter in day-to-day use
Built-in DAC for USB-C audio conversion
The adapter uses a smart DAC chip and is rated for up to 16-bit/48 kHz sampling. In practical terms, that is the core reason it exists, because it converts the digital audio output from the USB-C port into an analog signal your 3.5 mm headphones can use.
3.5 mm CTIA-compatible headphone connection
It includes a 3.5 mm female port listed as CTIA compatible. That is usually the right baseline for standard wired headphones, but it also helps explain why some microphone types are not supported. If your headset relies on a specific mic wiring standard (TRS or OMTP), this adapter may not behave as you expect.
Cable and build aimed at durability
The cable is described as off-white braided with an ABS casing, and the listing claims it can withstand 15,000 flex tests. While flex-test marketing is not the same as real-world longevity for every user, review comments do align with the idea that the adapter feels reasonably sturdy.
Compatibility and the one big “check before you buy”
This adapter is marketed for many USB-C devices across major brands, including iPhone models with USB-C (notably iPhone 16/17 series in the compatibility notes), Samsung Galaxy S-series models, iPad Pro models with USB-C, and various other USB-C Android devices such as Pixel, Huawei, OnePlus, and Xperia.
The most important buyer-fit checks are about your headphones:
- Microphone support: The adapter is not compatible with OMTPTS and TRS microphone setups, and microphone-only devices are not supported. If you rely on mic and inline controls, verify your headset’s plug and wiring standard.
- Apple EarPods remote/volume: Volume adjustment for Apple EarPods headphones with a 3.5 mm plug is specifically noted as not supported.
Pros and cons
Pros
- Easy plug-and-play setup, no app or software required
- Multi-pack value (4 adapters) for backups and shared use
- Built-in DAC with stated 16-bit/48 kHz audio support
- Braided cable and durability-focused design
Cons
- Mic compatibility is limited (not for OMTPTS and TRS microphone setups)
- Apple EarPods volume adjustment is not supported
Who should buy it
- You use wired 3.5 mm headphones and want them to work with a USB-C phone or tablet.
- You want a spare set because adapters get lost, or you want one in multiple bags and locations.
- Your priority is straightforward audio playback, and you are not expecting complex mic or remote behavior across every headset type.
Who should skip it
- You need reliable microphone support for headsets that use TRS or OMTP-style wiring.
- You specifically need Apple EarPods 3.5 mm inline volume controls to work through the adapter.
- You want highly specialized audio performance guarantees beyond basic playback, because buyer feedback is mostly focused on “it works” sound quality rather than measured fidelity.
Verdict
The Fidioto 4 Pack USB-C to 3.5 mm Jack Adapter is a practical buy for most everyday wired-headphone users who just need USB-C compatibility and dependable plug-and-play behavior. The main reasons to think twice are microphone and Apple EarPods volume adjustment limitations. If your use case is mostly listening, and you have CTIA-style headphones with no special mic requirements, this multi-pack is a sensible way to keep your audio setup flexible.
FAQ
Does the Fidioto 4 Pack support headphone microphones?
It is not compatible with OMTPTS and TRS microphone setups, and microphone-only devices are not supported. If your headset uses a different mic wiring standard, it may not provide mic functionality as expected.
Will this work with Apple EarPods with a 3.5 mm plug?
Volume adjustment for Apple EarPods headphones with a 3.5 mm plug is noted as not supported. Other playback behavior may work, but you should not plan on inline volume control.
Is it plug-and-play or does it need an app?
It is designed to be plug and play, with no software or complicated connections required.
What audio quality does it support?
The built-in DAC is stated to support up to 16-bit/48 kHz audio sampling rate.
Which devices are compatible?
It is marketed as compatible with many USB-C devices including iPhone 16/17 series models, iPad Pro (USB-C), and various Samsung, Pixel, Huawei, OnePlus, and Xperia models listed under its compatibility notes.
Is the 3.5 mm port CTIA compatible?
Yes, the 3.5 mm female port is listed as CTIA compatible.
Specifications
| Product Title | Fidioto 4 Pack USB-C to 3.5 mm Jack Adapter, Aux to USB C Adapter for Headphones Cable Compatible with iPhone 17/16 Pro Max/16 Pro/16/Samsung Galaxy S24/S23/S22/S21 Ultra/iPad Pro/Pixel 8 … |
|---|---|
| Category | Electronics > Headphones, Earbuds & Accessories > Adapters |
| Brand | Fidioto |
| Manufacturer | Fidioto |
| Model Number | 795816186214 |
| Color | White |
| Compatible Devices | Google Pixel, Huawei, OnePlus, Samsung Galaxy, Xperia, iPad, iPad Pro, iPhone |
| Specific Uses For Product | Headphones |
| Connector Type | Auxiliary, USB Type C |
| Number of Ports | 2 |
| Power Plug Type | No Plug |
| Smart Home Compatibility | Not Smart Home Compatible |
| Package Quantity | 4 |
| Unit Count | 4.0 Count |
| Number of Items | 4 |
| UPC | 795816186214 |
| Warranty Description | one year |
Available variants
Size
- 2 Pack
- 4 Pack
- 1 Pack
- 1000 Pack
- 500 Pack
Color
- White
- Black&White
- Black
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