HDZone

Pure Direct results in the highest possible sound quality by turning off the display and causing the audio signal to bypass all non-essential circuits so it travels the shortest possible path from input to output. Pressing the button engages Pure Direct for both the receiver and CD player.

A universal iPod dock is on the top of the receiver. When the receiver is in standby mode and you insert your iPod while it is playing, the receiver turns on and you can enjoy your music with enhanced power and clarity. A Play/Pause button is also provided. You can operate the iPod from the system remote, and the iPod charges while in use.

Like the components in the other systems, the CD-640 incorporates a new mechanism and circuitry that were developed to fit into the small interior space. We realised this with a compact disc loader positioned at the bottom of the chassis to minimise vibration and a high efficiency power supply. The power supply and digital and analogue sections are completely isolated, eliminating electromagnetic interference among them.

Rather than each section having its own earth, which can cause distortion due to shared impedance, the earth is located in one position, extending out to each section (power supply, DAC, CD module and digital circuitry).

The CD-640 uses an analogue power supply to avoid any negative effects of digital noise on sound quality. The transformer has been custom designed for this player, and the wiring from the power board to the other boards is extra thick.