Logitech Z625 2.1 Gaming Speaker System - THX Certified
User manual Logitech Z623 (2 pages)
Amazon.com: Logitech Z625 Powerful THX® Certified 2.1 Speaker System with Optical Input & Bluetooth Audio Adapter for Bluetooth Streaming : Electronics
Logitech Z625 THX Certified Computer Gaming Speaker System and Optical – PC Central
Logitech 980-001258 Z625 45W THX Sound 2.1 Speaker System - Black for sale online | eBay
Amazon.com: Logitech Z625 Powerful THX® Certified 2.1 Speaker System with Optical Input : Electronics