Accuphase DC 330 Brochure

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Accuphase DC 330 Brochure

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frequency and signal level. Therefore noise at very low signal levels that was difficult to contain with conventional delta sigma converters now could be drastically reduced. The audible result is music reproduction emerging from utter silence with an impressive sense of clarity and nuance. Volume control with smooth analog feel A massive knob on a precision-machined shaft rotates a disc with star-shaped slits which Fig. 2 MDS type D/A converter principle generate a series of pulses in a phase detector. These pulses are utilized by a microprocessor to govern the volume control function. For the user, the volume control of the DC-330 operates with a silky smooth and natural feel that perfectly matches the audible change in volume. The current volume setting is indicated by the numeric display and also by an array of LEDs on the circumference of the control. This lets you check the setting at a glance. Linear phase analog filters provide superior characteristics The analog filter, which serves to remove aliasing noise in the extreme upper frequency range, is a 3-pole linear phase type filter with outstanding phase characteristics. The cutoff frequency is optimized to minimize phase shift within the passband. Strict selection of all filter components assures sonic purity and total musical accuracy. D/A converter with printed circuit boards made from Teflon (glass fluorocarbon resin) with low dielectric constant and low loss The D/A converter boards use a substrate of nThis photograph shows the DC-330 with separately available option boards installed and with the shielding cover removed. nPCB assembly with analog output connectors (balanced and unbalanced, 2 each) and MDS D/A converter (2 boards for left and right) using Teflon* (glass fluorocarbon resin) substrate with low dielectric constant and low loss. nSupplied remote commander RC-24 Allows input selection and adjustment of volume, tone control on/off, loudness com- pensator on/off, attenuator on/off, and other functions. glass fluorocarbon resin which has a stable, low dielectric constant as well as superior heat resistance and high-frequency characteristics. Using this material for the audio circuitry assures signal transmission with utmost purity, resulting in a clear improvement in perceived signal- to-noise ratio. In the DC-330, gold-plated copper DAC #1 #2 S 1 e1 S2 e2 Sn-1 en-1 S0 e0 Sn en #1 # n MDS output Digital inputSignal Conversion error