The Rock Box is a special design to simulate the classic Marshall JTM 45 non-master-volume amplifier sound. It is designed to be used with on-board potentiometers, making it a tidy and compact format. The booster on-board can be wired independently. The controls include Volume, Gain, Tone, and Boost. This design is perfect for those who want to recreate the classic British sound of the Marshall JTM 45 without the need for cables.

Summary created by AI from the original source.