#Audirvana plus single song cycle drivers#

#Audirvana plus single song cycle drivers#

No additional drivers are required for use with Apple OS or Linux systems driver-installation instructions are provided for Windows users. The ZeroUno's USB input board, which is separate from its main circuit board, is designed around an XMOS chip, and offers a standard USB 2.0 interface. 'Upgrades are possible,' he added, 'while making changes to proprietary firmware.' Knowing the exact nature of this 'noise,' it is simple to filter it.' Canever's solution is to apply his own digital filter designsВ—an infinite impulse response (IIR) filter for DSD and finite impulse response (FIR) filters for PCM, implemented in the Sabre chipВ—plus his own stereo analog filter, placed between the Sabre and the ZeroUno's output stage. As Mario Canever explained, sigma-delta DACs such as the Sabre are often wrongly criticized for generating excessive noise: 'This 'noise' is really the same useful signal you listen to with your ears, plus the same signal, but shifted in frequency. Apparently, considerable engineering effort went into the ZeroUno's digital and analog filtering. amplifier.' Voltage gain for the ZeroUno's output stage is provided by an interstage transformer before the tubeВ—as Canever observes, 'it works as a step up transformer'В—mounted on the substantial main circuit board.ДЄt the heart of the ZeroUno is an ESS Sabre 32 ES9018S chip, its eight internal differential DACs used in a quad-sum configuration. CanEver says that an AES/EBU jack can be substituted for the BNC input jack, if desired.ДЄs for the CV181s, which are equivalents of the more commonly seen 6SN7 tube, designer Mario Canever told me in an e-mail that they're used 'to match the signal transfer between the output stage of the ZeroUno DAC, the connecting signals cables, and the input values of the.

Around back are one pair each of RCA and XLR output jacks, both carrying a single-ended signal, and jacks for the four inputs listed above. Also on the front are two pushbuttons: Input selects between the ZeroUno's four inputsВ—USB, S/PDIF BNC, S/PDIF RCA, and S/PDIF opticalВ—and Setup's jobs I'll describe in the next section. Flanking an LCD display screen are two 1.5'-diameter knobs: on the left a rotary power switch, on the right a knob that addresses a 32-bit internal volume control. Inside the central can are two toroidal transformers: one for the two tubes' output stages, the other for the DAC's analog circuitry. The cylinders at the sides contain toroidal transformers: the one on the left for the tubes' heater filaments, the one on the right for the digital circuitry. It isn't hard to imagine a mains transformer and a stereo pair of output transformers inside those cylinders, but the reality is slightly different. The single-box CanEver ZeroUno breaks convention by looking more like a low-power tubed amplifier than a DAC: the top of its steel enclosure, which measures 15.5' wide by 13.5' deep, is occupied by two Psvane CV181 dual-triode vacuum tubes and three soup-canВ–sized cylinders that bring the ZeroUno's overall height to 8'. But even now, as I praise its sound quality and its apparently reasonable level of value for the money, I'm less sure than usual whether I liked this product because it agreed with me or because it was right. By the end of its stay in my home, it had pushed virtually all of my Happy buttonsВ—not by doing everything I could ask of it, but by having a point of view that aligned with my own. Both approachesВ—and any number of othersВ—bend toward the sun of high fidelity.ДЄ case in point is the ZeroUno DAC ($7990), the first product from CanEver Audio, an Italian firm. It's an oft-made point that bears any amount of repetition: In our pugilistic little pastime, the priorities of the listener who values, say, fidelity to the musical timing captured in a recording over fidelity to that recording's timbral truths are no less legitimate than those of the enthusiast whose priorities are the other way around.

I refer not only to physiological differences in hearing acuity from person to person, but also to the no-less-critical differences in the ways we process and prioritize the things we perceive. It's the sad realization at the heart of every product review: No matter what the writer has to say, the reader may hear thingsВ—or see or feel or taste thingsВ—rather differently.