Description of SAC01UPRO Zoom: The New Studio Pro In 2005, Samson introduced the world's first USB studio condenser microphone, the C01U. Today, we're expanding on its revolutionary design with the new C01U Pro. Now with a headphone output for zero-latency monitoring and an improved signal-to-noise ratio, the C01U Pro ensures the natural warmth and detail of vocal and instrumental performances are captured in all your digital recordings. The C01U Pro is the ideal solution for musicians, producers, broadcasters, as well as recording audio for YouTube videos, voiceovers and podcasts. CO1U Pro is even compatible with iPads and iPhones (4S and later) using Apple's Lightning USB Camera Adapter or Camera Connection Kit (30-pin) for those seeking to achieve pro-level sound on-the-go. WARNING: This product contains DEHP, a chemical known to the State of California to cause birth defects and other reproductive harm. Description of SR350: Hear the Difference - Samson's SR350 Stereo Headphones provide quality bass performance and excellent sound isolation in a lightweight, over-ear design. The wide cushioning on its ear pads and adjustable headband provide serious comfort, while a low-profile fit makes the SR350s ideal for everything from home listening to fitness applications. Ear Bud Upgrade- The SR350s are a solid introduction to the superior audio quality provided by over-ear headphones. They make an excellent gift for the music lovers still using their supplied smartphone ear buds. It's a look that works with any outfit or occasion you can think of. Lightweight Listening- Featuring all lightweight components, the SR350s are ideal for a mobile lifestyle. Perfect for a variety of fitness and travel applications, these headphones offer hours of ultra-portable, fatigue-free listening for even your longest listening sessions.