Logitech Z625 Powerful THX PC Speaker (Black) Logitech Z625 is a powerful thx-certified 2.1 speaker system with deep bass delivering gaming-grade audio and the ultimate sound experience for your movies and music. Enjoy the full impact of thx audio with 400 Watts of peak power that delivers crisp, clear theatrical sound and thundering bass. Optical, 3.5mm and rca audio inputs connect up to 3 devices simultaneously including TVs, computers, PlayStation, Xbox, Wii, smartphones, tablets, music players, DVD players and Blu-ray players. No need to disconnect when switching between audio sources. Easily access volume, bass and power controls on the right satellite speaker to create a customized sound experience.