Questyle M15i DAC/Amplifier

An open-box unit is a product that has been returned or used for display purposes. This M15i has been inspected to ensure it functions perfectly and comes with the full 1-year manufacturer warranty, offering the same performance as a brand-new unit at a better value.

Yes, the M15i is Apple MFi certified, meaning it is fully compatible with iPhones and iPads. It provides a seamless plug-and-play experience without the need for additional camera adapters or complex workarounds.

The 3.5mm output is standard for most consumer headphones and IEMs. The 4.4mm balanced output provides higher power and better channel separation, which is ideal if your headphones support balanced cables and you want to maximize their performance.

Manual gain adjustment allows you to optimize the output power for your specific headphones. You can set it to low gain for sensitive in-ear monitors to avoid background hiss, or high gain to provide enough power for more demanding over-ear headphones.

No, the M15i is powered directly by your source device, such as your smartphone, tablet, or computer, via the USB-C connection. It does not contain an internal battery, making it lightweight and convenient for travel.

Yes, the M15i is compatible with Android 5.0+ and Windows 10 (v1803+) and later. It functions as a high-quality external sound card for your devices, significantly improving audio fidelity over standard onboard headphone jacks.