SWR STUDIO 220 Bass Amplifier Head Due to the age of the product, there is some crackling around the first notch of the [GAIN] knob, but otherwise, it functions without issue. Sound output has been confirmed. I previously purchased this item, but I am selling it because I bought a different one. It features a simple limiter, the familiar Aural Enhancer, a 4-band graphic equalizer with frequency controls in addition to BASS and TREBLE EQ. It also has a full range of input/output terminals, including preamp out, preamp in, EQ footswitch, crossover out/in, effects loop, and balanced out. Power: 220W@4Ω, 140W@8Ω Accessories: Power cable Operation confirmed. *I am not a professional, so I have not confirmed all functions for an extended period. Please understand that this is a used item and purchase accordingly. ・Notes 　Used item, stored at home. 　Please consider the item, understanding its age-related deterioration. ・Returns are not accepted, so please understand before purchasing. Please refrain from purchasing if you are overly concerned about details. #AllTubeAmp #Cabinet #AmpCabinet #BassAmp #BassAmpCabinet #BassAmpHead