Onkyo’s A-1VL digital stereo amplifier provides superior audio performance without sacrificing quality audiophile parts and build quality. This slim, futuristic digital amplifier possesses a low-impedance design with carefully selected audio parts—large capacity, separate toroidal transformers, thick copper bus plates and high-grade transparent speaker terminals. Also, the A-1VL combines PWM (Pulse Width Modulation) amplification and exclusive VL (Vector Linear) technology to smooth the ripples (fluctuations) and eliminate the noise inherent in analog or other PWM technologies. The result is 90% efficient amplification for wide dynamic and frequency ranges as well as noticeable sound harmony.