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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Cermet potentiometers
Audial Model A uses cermet potentiometer as premium part. The reason is simple: cermet is sonically clearly superior to any other potentiometer type. Cermet potentiometers are still however relatively unknown, so more information follows.
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Model A volume control
Model A uses the low impedance shunt potentiometer. This article brings more details about this ultimate volume control.
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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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AYA II DS, DIY edition
As announced a few months ago, we have another run of AYA II. This run, marked as DS, includes one update with respect to AYA II 2014: synchronous DEM clocking circuit is now more completely integrated, so it is not optional but integral part of this AYA II project.
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Model A, one year later: Power
The Model A shipped in 2015 can output up to 10 A current.
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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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Model A, one year later: Binding posts
Model A now sports copper plated copper binding posts. Here is why.
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AYA II 2014 DIY edition, second run
As an extension of original AYA II 2014 DIY edition offer, here is the second turn of AYA II 2014 orders.
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AYA II 2014 DIY edition talks
Everything related to AYA II 2014 DIY edition building, parts and possible tweaks can be asked, discussed or shared at this page.
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AYA II 2014 DIY edition interest check
As a result of initiative by several TDA1541A fans at diyaudio.com, AYA II DAC may re-appear in 2014.
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Sweet spot of amplifier power
According to the common wisdom, the relation between the amplifier power and its sound quality may look like the relation of equivalence. “The more the better.” The truth is, the best sound quality is associated with certain working points, which also implies certain power. Insisting on (often redundant) power, actually can and does compromise the sonic properties.
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Designing the ultimate monolithic amplifier
A sum up of more than decade of designing and living with chip based power amplifiers.
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Model A, the first appearance
The first Audial amplifier, Model A, is here. With power set to 25 W per channel (50 W option is also available), Model A is intended to drive medium and high efficiency speakers (86 dB / 1 W / 1 m and more). It is designed to bring the highest sonic performance, for modest price.
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