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DIY & Tutorials
DIY For Audio
The Sonic2k Headphone Amplifier
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<blockquote data-quote="rfq" data-source="post: 634770" data-attributes="member: 15523"><p>Update:</p><p>The output i.e. the headphones are switched to the amplifier via relay. This produces a pop-less switching configuration.</p><p>The power relay is also controlled at present, this is why you will notice two transistors.</p><p>So the power amplifier is turned on first, then after a delay, the headphones are connected, resulting in a pop-less/click-less transition from standby to power on.</p><p></p><p><img src="http://i738.photobucket.com/albums/xx23/Parley2230/Audio%20Engineering/IMG_4667_zps9nbb8bs4.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p></blockquote><p></p>
[QUOTE="rfq, post: 634770, member: 15523"] Update: The output i.e. the headphones are switched to the amplifier via relay. This produces a pop-less switching configuration. The power relay is also controlled at present, this is why you will notice two transistors. So the power amplifier is turned on first, then after a delay, the headphones are connected, resulting in a pop-less/click-less transition from standby to power on. [IMG]http://i738.photobucket.com/albums/xx23/Parley2230/Audio%20Engineering/IMG_4667_zps9nbb8bs4.jpg[/IMG] [/QUOTE]
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DIY & Tutorials
DIY For Audio
The Sonic2k Headphone Amplifier
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