USB-C to 3.5mm Headphone Adapter with Fast Charging Audio - DuoTune

KEY FEATURES

🔹 Charge and listen at the same time
🔹 3.5mm jack restores
🔹 Type-C charging port
🔹 Compact red aluminum body
🔹 No Bluetooth pairing, no wireless latency 
🔹 OTG certified for broad compatibility

PRODUCT DESCRIPTION

Your USB-C Phone. Your 3.5mm Headphones. Charging and Listening at the Same Time

Modern USB-C smartphones give you one port and force you to choose between charging your phone and listening through wired headphones. A dead battery or silent commute. The GRUNX DuoTune 2-in-1 USB-C Audio Adapter ends that compromise entirely a compact red aluminum adapter with both a 3.5mm headphone jack and a Type-C charging port built in, so you can plug in your headphones and charge your phone simultaneously without choosing one over the other. One adapter. Both ports active. No more choosing between music and battery.

2-in-1 Simultaneous Audio and Charging Both at Once

The supports simultaneous audio output and charging through a single USB-C connection plug your 3.5mm headphones or earphones into the audio jack and connect your Type-C charger into the charging port at the same time, keeping your phone powered while you enjoy music, podcasts, calls, and content without interruption. For Indian commuters on long Mumbai Metro rides, students in Pune libraries, and professionals working through long Bengaluru workdays with headphones on, never having to choose between charging and listening is not a luxury it is a daily necessity.

Type-C to 3.5mm Audio Use Every Wired Headphone You Own

The converts your USB-C port into a standard 3.5mm headphone jack making every pair of wired earphones, in-ear monitors, and 3.5mm headphones you own fully compatible with your modern USB-C smartphone or tablet. No Bluetooth pairing, no wireless latency, no charging earbuds just a direct, reliable wired audio connection that works instantly every time you plug in, with the full sound quality your headphones are designed to deliver.

Compact Red Aluminum Body Durable, Pocket-Ready

The DuoTune is housed in a compact red aluminum alloy body small enough to live permanently plugged into your phone, sit in a pocket without discomfort, or travel in a bag without adding any meaningful bulk to your daily carry. The aluminum construction handles daily plug-and-unplug cycles, commute wear, and travel without cracking, fading, or failing the way cheap plastic adapters do within weeks of Indian daily use.

OTG Compatible Broad Device Compatibility

Certified OTG compatible works with all USB-C Android smartphones, tablets, and devices that support OTG functionality, covering Samsung, OnePlus, Xiaomi, Oppo, Vivo, Realme, Google Pixel, and every other USB-C device in the Indian market.

SPECIFICATIONS

• Ports: 3.5mm headphone jack + Type-C charging port both active simultaneously
• Input: Single USB-C connection splits into audio and charging output
• Body: Compact red aluminum alloy durable, pocket-ready, and travel friendly
• Function: OTG certified full simultaneous audio and charging support
• Compatibility: Samsung, OnePlus, Xiaomi, Oppo, Vivo, Realme, Google Pixel & all USB-C OTG devices
• Design: Permanently plug-ready small enough to stay connected to your phone daily

How do I use wired headphones with a phone that has no headphone jack?

GrunX's TunePort  adds a 3.5mm jack to any USB-C phone; the DuoTune does the same while also passing through 60W fast charging so you can listen and charge at once.

DUOTUNE PRODUCT FREQUENTLY ASKED QUESTIONS (FAQ)