It shows signs of use, but it works without any problems. It comes with the box. I couldn't peel off the back well, but I'll ship it as is, sorry. It's very convenient because it has a noise filter. The boost also boosts smoothly. You can make it incredibly loud. I often left the boost on because it improved the sound's sharpness, and I liked it. I used it because it improved the sound resolution. I think it's a good item, so if you want it, please do. The Empress Effects buffer+ functions as the perfect I/O interface for your pedalboard, designed to give you the highest level of guitar signal. In addition, it includes numerous 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 aligns all the connections on your pedalboard and allows for efficient setup, but it also has many functions that are useful for various sound creations and performances. The perfect design unique to Empress Effects, which maintains high-quality audio design comparable to professional audio in every pedal, is attractive. 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, the effect board is at your feet, and a long cable runs from there to the amplifier. The output impedance of pedal effectors is still high and not in a suitable state when considering 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.