40w Class-A PCB Power Amp Version 2 Features more space and place for bigger heatsinks. I also added a balanced input driver (INA137 at -6dB) Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on Pinterest (Opens in new window)Click to share on Reddit (Opens in new window)Click to share on LinkedIn (Opens in new window)Like this:Like Loading...