The unique VACS (Vibration Acoustic Control Structure) design protects the disk from unwanted resonance.For better sound, you get an independent power supply using digital and analog sections using Cirrus Logic components.It has the same design as the rest of the Reference 501 series, so you can build a truly sophisticated compact audiophile system. Power consumption by TEAC engineers has not been ignored. With just 11 watts of power, goes into auto standby after 30 minutes of minimal power and no playback.