【Product Description】 This is an offering for the ELECTRO-HARMONIX "BASSBALLS," a bass envelope filter loved by professionals and amateurs alike for its unique sound. This unit is a valuable **"big box" era MADE IN USA** model, distinct from the current Nano series. The overlapping of two dynamic filters creates a unique "wah-wah" vocal sound, as if a human is speaking. Furthermore, by switching on the **DIST.** switch on the top of the enclosure, you can enjoy an even richer harmonic effect sound, making it a highly popular model not only for bass but also for guitar. Please experience the vintage-like look and the thick sound that cannot be produced by current products. 【Condition of the Product】 Operation: Operation of power and effects has been confirmed. Appearance: Due to its age, there are signs of use such as scratches, marks, and rust on the entire enclosure (see images). It is a condition that you can enjoy as a characteristic of vintage items. Remarks: The screw to secure the back cover is missing. Currently, there is no major problem in use, but please be aware of this. 【Accessories】 Body only. *All items shown in the photos are included.* *Batteries and AC adapter (mini-phone plug type) are not included.* 【Notes】 There are no other accessories than those listed in the photos. Please purchase only if you understand that this is a used/vintage item, including the missing back cover screw. Please note that the item may be sold out as it is also listed on other sites.