I purchased this and stored it after only testing it out. There are no operational issues. This is just my personal impression, but it has a good response, which is typical of BJFE. The BJFE Buzz Bender is a fuzz pedal based on the Buzzaround, which stands out among British vintage fuzz pedals. *All BJFE pedals are hand-painted. Because they intentionally use weak paint, there may be unevenness, thin spots, peeling, and bumps in the paint, but this is part of the specifications, so please understand. The BJFE Buzz Bender is a fuzz pedal based on the Buzzaround, which stands out among British vintage fuzz pedals. The V knob adjusts the overall volume. The F knob adjusts the overall distortion and balance of the fuzz. It also affects the volume depending on the setting. The T knob mainly adjusts the tone, focusing on the high frequencies. The B knob mainly adjusts the tone, focusing on the low frequencies. The Buzz Bender operates on a 6F22 9V battery or a standard 2.1mm barrel-type center-negative DC9V adapter. 【BJFE】 The effects created by Bjorn Juhl, now a legendary effect builder, have surprised many players with their sound. The sound produced by his unique circuits has overturned the conventional concept of effectors and continues to be highly supported worldwide. - Model Name: Buzz Bender - Control Knobs: V, F, T, B - Output Terminals: Out - Switch: Footswitch - LED Indicator: Red - Design: Metallic Silver Finish Thank you for viewing.