※ Please first take a look at the seller profile. This is a self-powered, monaural speaker with a handle, designed for portability indoors, such as on a stage, and is a multi-purpose power monitor speaker. This is a set of two. ・It has input switching and supports different inputs such as microphones, guitars, and keyboards. ・The volume controls produce noticeable "humming" noise when turned up, but it's about the same as when new. ・There is no scratchy noise when turning the knobs (of course, sound will come out if you switch inputs without turning down the main volume). ・I haven't been able to test the output systems, including the headphones. Since it's old, please consider the possibility of future breakdowns and purchase with no returns. ※ Please consult in the comments for individual sales. I will accommodate this as long as a set sale doesn't occur. In that case, I will relist with half the price as a guide, so please check there again. ※ Purchased in 1985. ※ Will be shipped in the original box shown in the image. For a set of 2, the two will be placed in a larger original box and shipped as a single item. [Product Name] KORG Multi Monitor MM-25 ・Rated Output: 25W ・Peak (Instantaneous Maximum) Output: 50W ・Weight: Approximately 5kg ・Input Terminals: Line (FUNCTION, Switchable), Line (Fixed) ・Output Terminals: Line, Headphones (Speaker sound ON & OFF) ・FUNCTION (Input Switching): Line, Keyboard Low, Keyboard High, Guitar, Guitar Distortion, Microphone ・EQ: LOW, HIGH, each with +/- knob adjustment ・Power: AC100V #amplifier #monitorspeaker