Ever since its inception, the digital or "modeling" guitar amplifier has caused a great deal of debate amongst players. On one hand, a digital amp gives you versatility, with a multitude of emulated amp "models" and tones that can be dialed up within seconds. A regular vacuum tube amp is far less versatile, but purists will argue that the warm tube-sound it produces can never be replicated by digital modeling. In an effort to bridge the divide between the two, MI Audio has created the Flex SmartAmp, a tube-driven, analog guitar amplifier that can be digitally controlled using an iDevice.
Read the full article: Flex SmartAmp takes a best-of-both-worlds approach to guitar amplification