Thanks, Wayne. The inductor problem may make the solution no better than op-amps?I can't read the teeny writing in the Bench schematic GIF, is it possible to post or e-mail just the schematic to be enlarged? I saved it to My Pictures but my photo editor won't read it.
What I can see doesn't look too bad to build, point-to-point. don't know about a power supply, tho'.