MelChiOr 1337 and MeJLHior 1337 Discrete Opamps

The MelChiOr 1337 and MeJLHior 1337 discrete opamp designs based on the Melchior 1731. They were designed with the goal of keeping the total cost below €2 for each amp, earning them the "frugal" designation. Both opamps feature a slightly more symmetrical transient response than the original and a more streamlined layout for perfboard. The designer has compiled perfboard layouts as well as some extremely useful instructions for tuning the output stages. [gallery link="file"] <strong>Resources:</strong> <ul> <li>The desiger's GroupDIY <a href="http://www.groupdiy.com/index.php?topic=45107.0" target="_blank">thread</a></li> <li>DIY Projects with <a href="http://www.diyrecordingequipment.com/3840/5-ways-to-diy-with-discrete-opamps/">discrete opamps</a></li> <li><a href="http://wiki.diyrecordingequipment.com/wp-content/uploads/2011/08/instructions_eula.txt">Instructions and EULA</a> (.txt file)</li> </ul>