A colleague and I were looking at an oscilloscope catalog. They often had a model with different options for bandwidth, and higher bandwidth oscilloscopes were more expensive.
My colleague said that in reality the models that were the same except for the bandwidth had exactly the same hardware, and the manufacturers would simply change their software to set the bandwidth. I thought this was a bit absurd, and argued that the higher bandwidth would likely require higher sampling rate and probably different parts inside the oscilloscope. He then argued that it wouldn't make sense for a company to have so many different hardware and thus they just do it by software.
We couldn't reach an agreement. So, do oscilloscope manufacturers just set the bandwidth of their oscilloscope in software and we pay extra just for a software setting?