Since the advent of microprocessors and digital signal processing, "modeling amps" have been developed in the late 1990s, these can simulate the sounds of a variety of well-known tube amplifiers without needing to use vacuum tubes.
Since the advent of microprocessors and digital signal processing, "modeling amps" have been developed in the late 1990s. These can simulate the sounds of a variety of well-known tube amplifiers without needing to use vacuum tubes.