Works as confirmed. Electro-Harmonix BIG MUFF. An effector with excellent tone adjustment. Used only indoors, there are some scratches, but it works without any problems. The box and the postcard from when it was new are included, although they are deteriorated. Also, a non-brand foot switch hat is included (hex wrench not included). It will be much easier to step on. - Model name: BIG MUFF - Brand name: electro-harmonix - Controls: Volume, Tone, Sustain - Country of manufacture: USA - Marking: MADE IN NYC Thank you. Manufacturer: BOSS