Well firstly, if you care about looks, then you got plenty of options to choose from, as guitar amplifiers tend to come in a plethora of design starting from retro to futuristic. However, that's not really the important part of finding the best amp for your jazz guitar. What's important is the controls, and they should be as versatile as it gets, while the watt power is also important, and that's definitely something you should consider when buying one. Most jazz guitar amplifiers feature two 60-watt power amps that come connected to two individual 12