Audioengine N22 Desktop Power Amplifier - Powerful Dual Class AB monolithic amplifier - High-performance headphone output - Variable preamp output - USB charge/power port - Gold-plated speaker connectors - High-quality analog volume control - Detachable power cord - Recommended speakers: Audioengine P4 - 22W RMS/40W peak per channel (AES) - Inputs: RCA and 1/8" (3.5mm) mini-jack - Outputs: RCA variable preamp - Input impedance: 10K ohms unbalanced - Cables included

Manufacturer Warranty: 3 Years Limited Warranty

Manufacturer Contact Info: http://audioengineusa.com/,