Overview

The black ATH-M40x Monitor Headphones from Audio Technica are designed for use in studio tracking and mixing and well as for DJ monitoring applications. They feature 40mm Neodymium drivers with copper-clad aluminum voice coils tuned for a flat response. The headphones have a circumaural, around-the-ear design that provides sound isolation in loud environments. The ear cups on the ATH-M40x can be swiveled up to 90 degrees, allowing for single-ear monitoring. The headphones have a detachable single-sided cable system, and both coiled and straight cables are included. E10K USB DAC Headphone Amplifier from Fiio is designed to improve your laptop’s audio output quality via its PCM5102 DAC chip and is capable of handling PCM files in up to 24-bit, 96 kHz resolution. It features a selectable bass boost and low-pass filter, both with circuitry optimized for a low noise floor when engaged, allowing you to customize the sound of your audio to your tastes.
In the box

Audio-Technica ATH-M40x Monitor Headphones (Black)
3.9 to 9.8′ (1.2 to 3 m) Coiled Cable
9.8′ (3 m) Straight Cable
1/4″ Screw-On Adapter
Carry Pouch
Limited 2-Year Warranty

FiiO E10K USB DAC Headphone Amplifier
Limited 1-Year Warranty