Maxon BE-01 Bass Equalizer Effect Pedal, with a blue design for versatile sound creation. This is a used Maxon BE-01 BASS EQ. Made in Japan. This is a 1980s Maxon Zero One series Bass EQ effector. It can boost and cut the 50, 100, 250, 500, 1K, 2K, and 5K frequency bands within a range of ±15dB. It also features a LEVEL control. ●Sound output confirmed (confirmed with a DC9V adapter I had on hand. However, confirmation at high volume and for extended periods was not performed. Please understand that I cannot make judgments regarding sound quality.) - Model: BE-01 - Brand: Maxon - Type: Bass Effect Pedal - Function: Equalizer - Color: Blue Thank you for looking.