Yamaha's THR home/studio amps were already pretty good, having built-in tube-like tones and effects, battery-powered portability if you needed it, and the ability to interface with a computer over USB ...

The pressure waves from a cranked 100-watt tube amp could kill any insects or small rodents in close proximity. Even low-powered, solid state practice amplifiers can be too loud for apartment dwellers ...

With the original THR line of guitar amps, Yamaha basically invented a new product category: the connected desktop amplifier. It filled a need that honestly many guitar players didn't even realize ...