Board files for my “PA100” parallel chip amp with the LM3886 first presented here. I’ve used the app. Note version of the circuit which is non-inverting and uses low-tolerance components to minimise offset between the two ICs. There is also the Jeff Rowland-derived inverting circuit that is normally employed as a PA150/BPA300. After I built several LM3875 and LM3886 gainclone amplifiers, I was totally impressed by their audiophile sound quality. My design goal is to create a audio power amplifier that can deliver 300W into my 4-ohm DIY speaker with low distortion. I want it to produce deep, tight and punchy bass while keeping the excellent mids and highs from my other gainclones.
![Linkwitz lm3886 balanced index Linkwitz lm3886 balanced index](https://cdn.instructables.com/FRN/RE1C/H8W1VDC0/FRNRE1CH8W1VDC0.LARGE.gif)
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![Linkwitz lm3886 balanced plan Linkwitz lm3886 balanced plan](http://www.shine7.com/audio/PA100_schematic.gif)