Yes. But the technology has improved. For example, such amps now utilizes the FX loop and true bypass; where you can use an original amp and in addition the module amp as additional channels. And the FX Loop on the module will accept your pedals and such. The new amp cases are also reverse compatible to work with older Randall or Egnater modules. I suppose it's not much different than Fractal audio improving on amp simulations and modeling technology. The technology was existent but much improved upon in many ways.