BOSS SD-1 vs Tube Screamer | Waveshapes, Frequency Response and Harmonic Content [NO GUITAR PLAYING]

Super nerdy video, but I know fellow nerds will appreciate it! I was pretty unwell when I recorded this, and it was first thing in the morning so apologies for the croaky voiceover.
0:00 intro
1:04 setup explanation
1:26 1kHz sine input
4:48 pink noise input
5:07 harmonic analysis