15-degrees upward design creates a more natural listening exprience.
Digital amplifier converst analog signal to short wave in which the pulse width changes in time (PWM = Pulse Width Modulation). Short waves turn FET (Field Effect Transistor) on/off and it integrates the signal and drives speakers.
Compared to analog amplifier, it has a higher efficiency, generates lesser heat and has low consumption of electricity. As it consumes less electricity, it does not require metallic plates to radiate heat, making it an environmental product.