Another story about TDA1541A: 384 kHz

Can this old gem get there?

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Back to the roots: 14 bits (of TDA1541A)

By measuring standard low level performance at -60 dBFS (dithered sine wave), there was practically no difference between its regular 16 bit, and this 14 bit “mode” of operation. Noise floor, on the other hand, is somewhat higher, roughly speaking 6-12 dB, and that is what you would expect, given 2 bits difference.

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USB to simultaneous data or I2S converter, series 2

Audial USB interface second release. Now offered as both module and ready made device.

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USB to simultaneous data (or I2S) board

Audial quality USB interface. At one side it connects to PC via USB port, and on the other it outputs “raw” PCM signal, in simultaneous data or I2S form.

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Transformer coupling pros and cons (in a nutshell)

Purely sonically, transformer coupled output has more calm presentation, with more quiet background, and somewhat more precise soundstage. On the other hand, transformers can lack some definition at the most bottom end. Still, possible benefits and shortcomings depend also on the environment.

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Asynchronous USB to simultaneous data converter board, interest check

Asynchronous USB Audio Class 2.0, galvanic isolation, two oscillators, and reclocked simultaneous data output. With U.FL output connectors it would be adequate companion to AYA II 2014 or DS board, and of course the great possibility to connect PC to Model S MkIII.

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Model S MkIII schedule

In addition to S/PDIF, MkIII version of this converter will also include direct PCM input, able to accept both commonly used I2S and TDA1541A specific simultaneous data protocol.

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PSU transformers, part 2: Model S USB inside

As a follow up to the previous article on transformers, here is how this part is done in the Model S USB. This is also the first public appearance of Model S USB interior.

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Model S MkII

Two and a half year after its release, the Model S goes through a couple of changes. Admittedly, there were no previous plans for substituting the Model S with MkII successor and, as perfected as it is, the overall architecture remains actually intact.

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TDA1541A and Model S USB, part 4: TDA1541A grades and series

Audial DACs are famous for using all quality parts, and not one or two for marketing purposes. Still, is S1 (single crown) really better than plain TDA1541A (or non –A), and is S2 (double crown) then better than S1?

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