FiiO Q3 Headphone Amps Portable Amplifier High Resolution DAC DSD512 for Smartphone/PC/Laptop/Home/Car Audio Compatiable with iOS/Android 2.5/3.5/4.4mm Output (Q3-MQA)Size: Q3 MQA Crafted from high quality components This headphone amp features a high quality DAC and supports high resolution audio formats, ensuring that your music is reproduced with incredible accuracy The compact design makes it easy to take with you on the go The adjustable gain control allows you to fine tune the volume to your liking Item Number: FiiO Q3 MQA Dimensions: 7. 56 x 4. 41 x 2. 09 inches Weight: 0. 84 lb Introducing our Headphone