This is a Denon speaker & headphone amplifier. It offers high sound quality, sufficient output, and is user-friendly with Bluetooth connectivity. I purchased it new in 2019 and used it for about two years, after which it was stored unused. Output: 20W + 20W (8Ω load) Speakers: 4-16Ω load Headphones: Φ6.3mm jack Inputs: Analog Optical Digital Coaxial Digital Please refer to the Denon website for detailed specifications: https://manuals.denon.com/pma30/jp/ja/WBSPSYxssgimna.php