Used only at home. I have confirmed that it works. The ear pads are somewhat deteriorated, with cracks and slight peeling. It's hard to see in the photos, but when wiped, black flakes come off. They don't continuously fall off, so they are usable, but please refrain from purchasing if you are concerned. Also, it's stiff to lower the volume knob below 6, and the numbers are smudged as a result. It does turn. No box, just the main unit, the included conversion plug, and a L-shaped conversion plug that I bought with this product as a bonus. ■amPlug Built-in Headphones ■Bass Type ■New concept amPlug built-in headphones that provide authentic bass sound quickly. ■The headphone part uses reliable audio-technica closed-air dynamic headphones. ■Equipped with a reactor circuit in the headphone amplifier section. Achieves dynamic amplifier sound considering impedance, efficiency, and dynamic characteristics. ■Faithfully simulates the circuit characteristics of the original amplifier with a completely analog specification. ■Built-in bass compressor ■Battery life up to 20 hours. ■When the power is off, it can be used as regular headphones. ■Comfortable fit that reduces fatigue even after long hours of use, and a folding mechanism for easy portability. ■Equipped with an AUX input terminal for jam sessions with CD/MP3 players. ■A popular headphone amplifier series that allows you to easily enjoy authentic bass sound. The amPhones series further promotes this casualness. With amPlug, separate headphones were required, but with amPhones, the amPlug is built into the headphones, so you can enjoy authentic bass sound as is. The headphones themselves use audio-technica, and when the power is off, they can also be used as regular headphones. You can connect a guitar/bass, or listen to music as headphones. With this, the amPhones, which are essential items for VOX fans, will be active in all situations, such as personal practice at home or in the dressing room, and playing portable music players while moving to the practice studio. Thank you for viewing.