Best USB-C Audio Adapters with Pass-Through Charging in 2026

The Subynanal USB-C to 3.5mm adapter is a practical solution for anyone with a modern smartphone lacking both a headphone jack and dual USB-C ports. This 2-in-1 dongle targets drivers with older car stereos, audiobook listeners on road trips, and anyone who needs to charge while using wired audio. It's particularly valuable for those whose vehicles lack Bluetooth or have unreliable wireless connectivity.

The standout feature is simultaneous audio and charging capability, supported by robust 60W PD fast charging that keeps pace with modern flagship phones. Audio quality reaches 32-bit/384kHz resolution, delivering noticeably better sound than standard 24-bit/96kHz adapters. The compact 13cm design makes it genuinely portable, and plug-and-play functionality means zero setup hassle. Compatibility spans iPhone 15 through 17 series, Samsung Galaxy S24, Google Pixel 9, and dozens of other USB-C devices.

Build quality appears solid with a glossy gray finish, though the lightweight 4.54g construction raises durability questions. The adapter uses standard CTIA and OMTP audio formats, ensuring broad compatibility with various headphones and car systems. However, real-world performance shows inconsistency, with some units experiencing connection drops after weeks of use, particularly in vehicles where the adapter experiences vibration.

The primary drawback is reliability variance. While many users report excellent long-term performance, others experience intermittent disconnections that disrupt audio playback during drives. Additionally, some newer phones prioritize QC charging over PD, potentially limiting fast-charging benefits. The adapter also cannot transfer data, which is a minor limitation for most users but worth noting.

Verdict: This adapter delivers genuine value for the price if you need wired audio connectivity with simultaneous charging. It works exceptionally well for most users and offers superior audio quality compared to alternatives. However, reliability concerns and potential compatibility issues with specific devices mean it's a calculated risk rather than a guaranteed solution. Best for budget-conscious buyers willing to accept possible replacement needs.

This adapter works with virtually all modern USB-C devices. iPhone models include iPhone 15, 15 Plus, 15 Pro, 15 Pro Max, iPhone 16, 16 Plus, 16 Pro, 16 Pro Max, iPhone 17, 17 Plus, 17 Pro, and 17 Pro Max. Samsung compatibility covers Galaxy S24, S24+, S24 Ultra, S23 series, S22 series, S21 series, S20 series, and older models like S10, S9, S8 Plus, plus Note series 20, 10, 10+, 9, and 8.

Google Pixel phones including Pixel 9, 8, 7, and 6 are fully supported. iPad users can connect iPad Pro and iPad Mini 6 models. Other compatible devices include Huawei Mate and P series phones, OnePlus 6T through 7 Pro, and MacBook computers. The adapter supports CTIA and OMTP audio standards, ensuring compatibility with most aftermarket headphones and car audio systems.

Important note: While the adapter is physically compatible with most USB-C devices, some phones may not support simultaneous audio and charging due to firmware limitations. Always verify compatibility with your specific phone model before purchasing if you need guaranteed dual functionality.

Setup requires no installation, drivers, or apps. Simply plug the USB-C connector into your phone and connect your 3.5mm headphones or car AUX cable to the audio jack. For charging, connect your power adapter to the USB-C charging port. Both connections work simultaneously on compatible devices.

For optimal fast charging, use a PD-compatible wall charger rated 30W or higher rather than standard chargers. The adapter supports up to 60W, so high-wattage chargers will provide the fastest charging speeds. Note that some newer phones use QC charging instead of PD, which may result in slower charging through this adapter.

If you experience connection drops, try gently repositioning the adapter or checking for debris in the connectors. Avoid storing the adapter in hot environments or subjecting it to excessive vibration. Keep the original packaging for warranty claims if needed. The 12-month warranty covers manufacturing defects, so contact the seller immediately if issues develop within the warranty period.

The UGREEN USB-C to 3.5mm Audio and Charger Adapter is a practical 2-in-1 solution designed for anyone frustrated by the lack of a headphone jack on modern devices. Whether you're streaming music in your car, gaming on a Steam Deck, or taking calls during work, this adapter eliminates the choice between powering your device and enjoying audio through wired headphones or car speakers.

The standout feature is the combination of simultaneous charging and audio output with impressive audio quality. The built-in DAC chip delivers crisp 24-bit/96kHz sound with advanced noise reduction, noticeably superior to many competitor adapters that max out at 16-bit/48kHz. The 60W fast charging support via PD3.0 and QC3.0 standards means your device stays powered even during intensive tasks like navigation or video calls, though Samsung users should note a 15W maximum limit.

Build quality is solid with a premium aluminum connector and high-density TPE cord that feels durable for daily use. The compact, lightweight design makes it easy to toss in a bag or leave in your car. The adapter supports TRRS microphones, allowing you to take calls through your wired headset or use game chat on Switch 2 and Steam Deck while charging simultaneously.

Real-world performance has been largely positive, with users praising audio clarity in car stereo systems and professional audio setups. However, some users report occasional issues including charging notification popups on certain iPhone models when using audio and charging together, and rare instances of loose 3.5mm connections requiring adjustment. Ground loop noise in car installations can be resolved with an inexpensive ground loop isolator, which several reviewers confirm works well.

The UGREEN adapter is an excellent choice for anyone with a USB-C device who regularly uses wired audio and needs reliable charging. It delivers genuine value for music lovers, gamers, and frequent travelers, with the caveat that compatibility varies slightly by device and occasional tweaks may be needed for optimal performance.

Audio Performance: 24-bit/96kHz DAC with advanced noise reduction, 3.5mm auxiliary jack with TRRS microphone support

Charging: 60W maximum output, PD3.0 and QC3.0 compatible, 15W max for Samsung series, operating temperature up to 43 degrees Celsius

Connectivity: USB-C port for charging only (no data transmission), 3.5mm jack for audio and microphone

Design: Premium aluminum connector, high-density TPE cord, compact and lightweight for portability

Compatibility: iPhone 16/17 series, Galaxy S24/S25/S26 series, Google Pixel 9/10 series, iPad Pro/Air, MacBook Pro/Air, Steam Deck, Switch 2, and more. Not compatible with Amazon Fire Max

Warranty: 24-month warranty service by UGREEN

Who Should Buy This: This adapter is ideal for anyone with a modern USB-C smartphone or tablet who regularly uses wired headphones or car audio systems. It's particularly valuable for road trip enthusiasts, mobile gamers, and professionals who need reliable audio and charging simultaneously. If you frequently use streaming services, take calls while driving, or game on portable devices, this adapter solves a genuine pain point.

When to Consider Alternatives: If you exclusively use wireless audio (Bluetooth), you won't benefit from this adapter. Additionally, if you require high-speed data transfer alongside audio and charging, this adapter's USB-C port is limited to power delivery only. Users with older devices or those requiring simultaneous data, audio, and charging may need a more complex docking solution.

Tips for Best Results: For car installations, consider pairing with a ground loop isolator if you experience noise. Ensure your power adapter supports at least 60W PD output for full charging speed. Test the 3.5mm connection with your specific headphones, as some may require slight adjustments. Samsung users should budget for slower 15W charging speeds compared to other devices.