The gold N90Q LE from AKG is a reference-class noise-cancelling headphone that features TruNote technology together with ear-cup mounted controls for auto-calibration of the audio. It can be used with several devices in applications for sound reproduction such as recorders, CD players, smartphones, tablets, MP3 players, and more.
Featuring bass and treble tone adjustments with no distortion, the N90Q headphones also have three spatial listening modes that provide customization options that include "Standard", "2.1 Studio", and "5.1 Surround Sound", and have been developed with input from Grammy award winner Quincy Jones.
Furthermore, there are USB and HD audio connections that provide full HD audio playback, software updates and rapid charging. The built-in DAC (Digital Audio Converter) enables hi-res digital audio tracks on a PC or an Android device and can be connected through the micro-USB port on the headphones. This means no digital/analog/digital conversion is needed and no quality loss.