OpAmp Noninverting Testboard

During the restoration of my old Yamaha RM1604 mixer from the 70's,

I thought about different buffers and line amp circuits for the master section.

The input channels sound very pleasant and color the sound in a nice way. (Eventually, I swap the OpAmps).

The master section with echo send, subgroups, aux in, aux out, etc. is too inflexible for mixing situations.

I'm also missing several aux paths. (Only 2 in the RM1608).

But breadboards are sometimes cluttered.

So I designed a board to test clearly and find the best solution for me.

So I came up with the idea of ​​trying out different circuits with a breadboard.

But breadboards are sometimes cluttered.

So I designed a board to test clearly and find the best solution for me.

This is a configurable non-inverting evaluation board for dual OpAmps.

For the input, output and feedback loop, components can be soldered or plugged in.

The second OpAmp half can be switched off or configured via plug contacts.

The board is for trying out buffer or lineamp circuits that can be used in audio mixing consoles.