This professional multi-interface headset bundle delivers exceptional audio engineering across three distinct task-oriented platforms to support dynamic office, call center, remote business, and media environments. Combining commercial-grade communications hardware from Poly and Plantronics with advanced consumer acoustic isolation technology from Siindoo, this custom lot adapts seamlessly across automated office mainframes, desktop computers, and standard analog hardware modules. Every unit is configured for daily occupational ergonomics, featuring lightweight headbands and dedicated mic parameters to maintain localized voice crispness during teleconferences or studio tasks. Complete with dedicated storage cases for all three items, this bulk collection represents an ideal operational setup for small businesses, technical upgrade pools, or dual-purpose workstation environments. Please review the photos as they are part of the description.Poly C5220• Color: Black
• Condition: All-around very good cosmetic and working condition with zippered storage bag.
• Audio Profile: Stereo dual-earpiece configuration delivering wideband audio and passive noise-muffling defense.
• Connectivity: High-speed wired cable interface featuring an attached inline volume and call control center.
• Comfort: Ultra-soft leatherette ear cushions paired with a lightweight metal headband cushion designed for all-day utility.Plantronics Blackwire 300 DA• Color: Black
• Condition: All-around very good cosmetic and working condition with mesh zipper pouch.
• Architecture: Ergonomic single-earpiece monaural layout allows continuous localized room awareness during deployment.
• Microphone: Adjustable noise-canceling boom microphone captures vocal tracks while isolating surrounding room chatter.
• Controls: Direct cable-integrated command matrix supports rapid volume adjustment and instant mute engagement.Siindoo ANC2• Color: Black
• Condition: All-around very good cosmetic and working condition with hard leather-like travel case.
• Technology: On-board active noise cancellation framework digitally blocks repetitive external ambient disruptions.
• Cable Spec: Premium removable analog 3.5mm link wire utilizing a specialized space-saving 90-degree right-angle adapter head.
• Drivers: Equipped with high-fidelity acoustic diaphragms configured for rich deep bass and pristine vocal presence.
