32-bit DAC chip company Simaudio

Canadian firm Simaudio declares its priority on the part of “the world's first D / A converter with a 32-bit converter and asynchronous sampling frequency conversion”. The 32-bit DAC microcircuits themselves are not so unique and are found in the construction of various devices in a wide range of prices, from one and a half to fifteen thousand dollars. For example, ESS SABRE32 ES9018S, in addition to the Moon Evolution series, are also used in the ORRO BDP-95 universal player. There are quite budgetary examples - like a mini-DAC with a headphone output of the Calyx DAC 24/192 type. If you focus on correct data transfer via USB, then there are other 32-bit DACs; In particular, the North Star Design USB dac32 on a Texas Instruments PCM1795 chip with 32-bit / 192 kHz parameters is immediately remembered. He, among other things, has the ability to receive a 32-bit data stream via USB, while the Simaudio variants, even in the latest version, work with only 24 bits.


Both the device, and dac32, and Simaudio Moon 750D, appeared on the market almost simultaneously - in the first half of 2010. The third example of 32-bit chips is Asahi Kasei chips, such as the AK4399, again present in “clean” stereo devices like the PureAudio Lotus USB DAC1 and in Blu-gau universalis, such as Denon DVD-A1UD.So, as you can see, the variety of solutions with 32-bit DACs is quite large, although not all of them work with asynchronous frequency conversion. However, we leave the manufacturers to prioritize and figure out which jitter-suppressing circuits and DAC architecture are optimal, and go back to our Simaudio Moon 750D player.


The device is made on a completely balanced circuit in the configuration of "double mono". When implementing power supply for Simaudio key microcircuits, it follows its own beaten path, using connecting sources to a stabilized power bus, each through an individual filter with inductance (unfortunately, in the last review on the 650D, we incorrectly described the organization of power sources, for which we bring your apologies). The company calls this principle i2DCf - separate filtering of DC circuits. The Andromeda top two-piece player has 56 similar separate circuits, the model 750D has 24 of them, and the 650D has 18. Other elements include two toroidal transformers, separately for the digital and analog parts, four-layer printed circuit boards, an output analog filter of the second order, etc. look identical for both players.Although it is possible that the company simply omits something in the description.

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