Thank you for viewing. I purchased this new about six months ago, but I am selling it to organize my equipment. It has been stored in a rack. I used it a few times when I bought it, and the feel was very good, but I haven't used it much since then. I have checked the power and confirmed the operation at the time of purchase. Below is a template description: The WA-2A OPTICAL COMPRESSOR is a high-quality compressor with a VU meter and balanced output. - Model Name: WA-2A OPTICAL COMPRESSOR - Level Adjustment Function: LEVELING AMPLIFIER - Output Meter: VU Meter - Balanced Output: Balanced output terminal - Accessories: Power cable, manual Thank you for viewing.