Frequently-used parameters, such as the amp type, have their own independent dial, and the tone controls can also be adjusted as easily as on a guitar or bass amp simply by turning the knobs.

• 常用的参数；如安培型；有自己独立拨号；与声调控制；可以同时调整容易就一把吉他或低音安培简单车削旋钮.