connectorsĭue to Audio Note (UK)’s ongoing research and development program, specifications are subject to change without notice. Available finishesįascia – Anodised Aluminium / Black Acrylic / White Acrylic Technical Specifications INPUTĩ6mm (h) x 300mm (w) x 270mm (d) inc. The end result being a reproduction more reminiscent of master tape in quality, with greater differentiation and contrast between different recordings.ĭAC0.1x converter uses a Philips TDA1543 stereo D/A converter chip and features a 6111WA valve zero feedback output stage. Having removed all the digital filtering that is part of the oversampling, we have also dispensed with all filtering in the analogue domain to further retain good wide band phase-frequency and dynamically coherent behaviour. In other words, all products in the Audio Note DAC range have no oversampling, no jitter reduction, no noise shaping and no re-clocking. The technology in essence dispenses with all the correction measures inherent in all other D/A converters and presents the digital signal directly to the converter after reformatting. The DAC uses the revolutionary and currently exclusive Audio Note digital technology dubbed 1x oversampling™ direct from disc™ circuit topology. Music is a time continuum from beginning to end, which when broken is irreparably damaged and no amount of clever manipulation can ever restore it to its original time-frequency-amplitude duration or relationship, regardless of what the theorists may tell you. Current theory is based on an assumption that music is similar to book keeping data which of course it is not. To this day, we combine these purely analogue filters (dubbed 1x oversampling™ direct from disc™ technology) with the finest components and materials available, including transformer interfaces and the highest quality vacuum tube circuitry to produce a range of Digital to Analogue Converters that are both refreshingly lifelike and free from conventional digital restraints and mechanical artifacts.Įxtensive research into the fundamental properties of the data stream itself have shown beyond doubt that regardless of the theoretical and measurable advantages of the signal manipulation employed in all currently available digital products, such as higher over sampling, noise shaping, re-clocking or jitter reduction, the result is this: all these corrective measures greatly interfere with the critical time domain requirements of the signal. The improvements this completely new circuit topology introduced resulted in a level of CD playback quality that was previously un-imagined. So, that is exactly what we decided to do, and the results were dramatic, to say the least. Digital filters and the associated over sampling had been broadly discussed, analysed and criticised, but what no-one had done at this time was to remove them altogether, to see what their real effects on ultimate sound quality were. What we learnt from the experiments with the digital / analogue interface transformers and filters in the DAC3 was that there had to be more information available on the discs than previous believed. Our first defining assault was made in 1992 when we introduced the DAC3, which, with its patented transformer / filter interface circuit, revolutionised CD play back. To understand the path that led us to the development of our current range of Digital to Analogue Converters, it is worth looking back at our ‘digital history’.
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