Dave explains Gain Bandwith Product and how it’s possible to increase your system bandwidth by cascading opamps in series. Also, a discussion on the associated noise issues.
A breadboard example shows how variable GBWP can be, and how it can relate to distortion.
Opamp Noise Tutorial
Another look at finding a $50 analog oscilloscope on ebay. Forum HERE Podcast: DownloadBe Sociable, ...