SA-98 is based on STMicroelectronics" TDA7498L core, use of EPCOS , PHILIPS, ALPS , EVOX , DALE, ERO refined accessories such as high fever, high quality digital amplifier, all its accessories to stick with original product. Technical Specifications: Output power: (DC 32V) 100 W / 4ohm. THD = 10%. 80 W / 6ohm. THD = 10%. 65 W / 8ohm. THD = 10%. Input Level: 400mv to 2V Chip efficiency: 90% Chassis Color: Black Panel color: Black Case material: Aluminum Chassis technology: drawing, coloring oxide, CNC machining Screen printing process: laser engraving Input Interface: RCA sockets (gold plated) stereo input Power Supply :100-240ACV Circuit plate: 1.6mm, Immersion Gold of 2OZ (oz) copper, the most advanced processing Machine Size: 168 x 98 x 36mm (including protruding parts) Machine weight: 1.25KG with packaging Machine configuration: 1 x SA-98 1 x Power Adapter 1 x Manual 1 x Warranty Card