![]() Internal components are of extremely high quality, as is expected from an Audio Note (UK) product. This technique not only provides excellent isolation between the digital circuitry and power supply, but also provides wellisolated short and clean analogue signal paths. To power this spectacularly revealing arrangement, we have incorporated a power supply with valve rectification. The analogue output has provisions for both single ended and balanced operation, using the best available quality RCA and XLR connectors. These devices not only have exceptionally wide frequency response, but also just about the absolutely best dynamic transfer function possible. Unlike the preceding models in the Audio Note (UK) DAC range, the DAC2.1x/II Balanced features a pair of custom designed and manufactured output transformers. The DAC2.1x/II Balanced features an upgraded version of the classic Audio Note (UK) Line preamplifier output stage, using a pair of ECC82 / 5814a double triode valves. It also features a valve rectified power supply (the standard DAC2.1x uses solid state rectification). The DAC2.1x Signature also features an abundance of upgraded components in comparison with the standard edition, including our own Audio Note (UK) Tantalum resistors and Copper coil capacitors used in key areas. The filter-interface coils / transformers are of extremely high quality, and are custom designed and manufactured in house by us. It uses the highest grade Analogue Devices AD1865, 18Bit stereo converter chip solely because we found it to be the best sounding available (yes, even better than the 20Bit versions!). Having removed all of the digital filtering that is required for over sampling, all filtering is done in the analogue domain where it is easier to retain good, wide band phase-frequency and dynamically coherent behaviour. In other words, the Audio Note (UK) DAC2.1x has no over sampling, no jitter reduction, no noise shaping and no re-clocking. All we do is to reformat the data stream to allow the converter chip to be able to interpolate the incoming information correctly. Music is a time continuum from start to end which when broken is irreparably damaged, and no amount of clever manipulation can restore it to its original time / frequency / amplitude duration or relationship, regardless of what the theorists may tell you.Īs a result, we have developed a way of excluding or bypassing all these corrective measures, to allow the conversion from digital to analogue to be done without any manipulation whatsoever. ![]() I highly regard the value of M1.The Audio Note (UK) DAC2.1x Digital to Analogue converter has been specifically engineered for sonic performance rather than technical specification, and fulfils all Audio Note (UK) Level 2 criteria: -Įxtensive research into the fundamental properties of the data stream itself have shown beyond doubt that, regardless of the theoretical advantages of the signal manipulation employed in our competitors products, such as higher over sampling, noise shaping, re-clocking or jitter reduction, these corrective measures greatly interfere with the critical time domain requirements of the signal. It has a clean design, simple layout, ease to match characteristic with very affordable price, especially if we think that we want to have amplifier with pre and power sessions separately, otherwise, why not just pick an integrated amplifier to save the cost? In fact, on the other hand, if we put M1 match with the other high end equipments, which I tried before in my friend's house, we cannot tell M1 is one pull down the overall value of the system. Many tube pre-amp can cost us over US$ 10K but actually without a good match of the rest of the components, it spoils the value of the expensive pre-amp. Single tube, not complicated components around it.ĭefinitely, M1 is not at a top end tube pre-amp model. If we open the body, you may be amazed on how simple the circuit of this pre-amp. Like the transport, this DAC sits about mid-way through their levels of digital converter products. The US price for the DAC2.1x Signature is 4,900. Q sent along with the CDT-Two/II transport that I so greatly admired. Compared to the rest, M1 gives me the impression of simple, clear, and musical. Unexpected Pleasures I wanted to share a few notes about the Audio Note UK ( website) DAC 2.1x Signature that Mr. I have tried a number of transistor pre-amp, tube pre-amp before. Though Audio Note M1 is about the entry level of the pre-amp series, it offers good details of sound.
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