Model A, one year later: Power

The Model A shipped in 2015 can output up to 10 A current.

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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 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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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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Introducing the Model A

The first Audial amplifier release is near, and here is the preliminary information.

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Sound of harmonic distortion

Harmonic distortion is one of the basic and most common ways to objectify sound quality of audio device. Yet, there is no consensus on its audibility. Here are several examples of distorted sinewave, to help your own understanding.

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Gainclone, where has it gone?

During the previous seven years Audial released six DACs, which established it as a “DAC specialist”. It happened that way, because one decade ago the digital source was generally the most misunderstood and most missing part of the audio chain. And in many ways, Audial DACs moved the limits of digital sources. And now the time for Audial amplifier has come.

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Balanced DAC I2S interface project

The OPA861 based output stage for TDA1541A, as used in the AYA II DAC, was posted here one month ago and, according to feedback, authentic and ambitious DIY spirit is still around. So I am reposting now one old article that was once available at pedjarogic.com.

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Data and signal: are we progressing?

Are bits still just bits? Actually, notable part of improvements achieved in the digital audio in last two decades happened due to designing for higher signal integrity criteria. So not that much for instance in the area of converter chips, which were during this time developed mostly to lower production costs. As a result, even if Philips D/A chips from 80′s are in many areas still unsurpassed, today it would be unimaginable for any serious design to repeat layout or clocking schemes as they were done in Philips CD players from 80′s (or majority of players from that time, for that matter).

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