Thank you very much for viewing. This is a power attenuator for guitar amplifiers. Product: ・Power Attenuator Ryosen 25 　Application: For guitar amplifiers 　Wattage: 5W～25W 　Supported impedance: 8Ω 　With PRESENCE switch 　Case size (excluding protrusions): 　Width 80 x Length 120 x Height 55 　*Measurements are approximate and for reference only. Condition: ・No noticeable scratches or damage ・It was working normally ・When turning the knobs, there is a slight scratchy noise at first, 　but the scratchy noise diminishes as you turn it, although it remains slightly. 　*I didn't mind it, but please refrain from purchasing if you are concerned. Please understand that this item was used personally, and please purchase if you appreciate the value based on the description and photos. Please refrain from purchasing if you are overly concerned about details. *Performance is not guaranteed. *Returns are not accepted. Please understand that this is an as-is sale. No comments needed, instant purchase is OK. Thank you.