Anyone in the Los Angles area with an Oscilliscope?

[ChrisTownsend]

I just finished building four N72 preamps and I don't have an oscilliscope to calibrate them. Is there anyone in the Los Angeles area who might be willing to help me out? I'd be willing to pay a reasonable fee for your help

[Randyman...]

You can use an output pad and a DAW that shows waveforms (pretty much any DAW) in a pinch. Adjust the bias until you see symmetrical clipping...