The Topping A90D Headphone amplifier builds on the success of the A90 model reconfiguring the NFCA module geometry to implement high performance discrete amplification. Exceeding previous designs the A90D delivers a powerful output capable of driving power hungry low impedance headphones & highly sensitive in-ear monitors alike. The internal components achieve astonishingly low noise levels ensuring that the signal remains accurate without colouration from unwanted distortion. The Topping A90D is a must-have for desktop scale high-fidelity audio.