Improved performance is typically related to the size of the silicon utilized by the chip. Other factors to note are whether the DAC is balanced or unbalanced, whether the DAC is a current-source device or a voltage-source device and the number of DAC channels inside the package. HDMI obviated them by enabling high-resolution multichannel digital signal transfer. In direct mode, the stereo inputs can be connected to the volume control to bypass the digital signal processor (DSP).Īlternatively, the inputs can be converted to a digital signal by an analog-to-digital converter (ADC) to drive the DSP.Ī direct path for a set of 7.1 analog inputs to electronic volume controls (volume controls that have gain circuits embedded in the volume controls themselves) is also not shown in this diagram. Not shown in Figure 1 above are the multiple sets of stereo inputs. More technical material is deferred to Part II of this article. Exc bad access word for macĪccess to manuals from some companies is restricted to authorized service centers, or companies may sell them to consumers at very high prices. Some of my manuals are dated by a couple years, but little has likely changed in the preamp sections of the units on which this article concentrates, with the exception of a handful of products that recently had a DAC upgrade. I draw my observations from service manuals and the technical information found on the manufacturers websites.
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