No box, works perfectly. The Empress Effects buffer+ functions as the perfect I/O interface for your pedalboard, designed to deliver the highest level of guitar signal. It also includes a number of powerful tools such as a noise filter, input PAD, a clean boost that can be turned on/off with a footswitch, variable input load, and a tuner mute function. It not only streamlines all the connections on your pedalboard and allows for efficient setup, but also has many functions that are useful for various sound creations and performances. Sound quality degradation due to the routing of guitar cables is a constant challenge for guitarists seeking high-end sound. Using the Empress Effects buffer+ prevents signal loss and eliminates changes in tone caused by cables. The perfect design unique to Empress Effects, which pursues high-quality audio design comparable to professional audio in every pedal, is its appeal. A signal buffer system with IN and OUT, two-section buffer circuits. In addition to the Guitar → Buffer → loop out input system, the Loop in → Buffer → Amp output system also performs buffering. The input buffer receives the guitar's output and amplifies the weak signal. This is the well-known role of a buffer. The output buffer strengthens the signal and makes it ideal for long-distance transmission. Considering its use on stage, there is an effects board at your feet, and a long shield cable is routed from there to the amplifier. The output impedance of pedal effectors is still high and not in an ideal state from the perspective of long-distance transmission, which can cause sound quality degradation such as high-frequency roll-off and the effects of external noise. The output buffer of the Buffer+ lowers the output impedance and prevents sound quality degradation even when long cables are connected, playing a role in transmission. Of course, it is also excellent as a buffer when used with a DAW, not just a pedalboard. Junction box Type: Electric Guitar