Logitech 939-001660 - A40 TR Headset + MixAmp Pro TR for PS4 & PC (Refreshed Version). Play like a pro! The ASTRO A40TR Headset + MixAmp Pro TR for Xbox One, PC and Mac is the premier audio solution for esports athletes, content creators and streamers. Tuned for Gaming Fine tune every input & output parameter. Built to last. Pro-quality audio control for your desktop. Less noise, more focus. Positional audio for an unprecedented competitive edge. Package Contents: A40 TR Gaming Headset, MixAmp Pro TR, 2.0m A40 Inline Mute Cable, 3m TOSlink Optical Cable, 3m Micro-USB Cable, Quickstart Guide and 0.5M Daisy Chain Cable. Technical Specifications: Technical Specifications - Headset: Transducer Principle: Dynamic, Open 40mm Sound Driver tuned for Gaming, Frequency Response: 20 - 20,000 Hz, Nominal Impedance: 48 ohms, Recommended Headphone Impedance: 32-48 Ohms, Weight w/o Cable: 369g, Connector: 3.5mm Mini-stereo, Boom Mic: 6.0mm Uni-directional, MixAmp Pro TR: Sound Power Out: 100 dBSPL, Sample rates - Game audio: 48 kHz @ 16 bit, Chat audio: 16 kHz @ 16 Bit, USB Standard: USB 2.0 Full Speed and USB Audio 1.0 Stream Port (Line out), Frequency response 20 - 24 kHz, USB Game and USB Voice (Chat), Aux port line out, Frequency response 20 - 8 kHz, Audio inputs, Optical In, USB Game and USB Voice, Aux port line in, Frequency response: 20 - 24 kHz, Total Harmonic Distortion: < 0.05% @ 0 dBFS, Signal to Noise Ratio: > 70 dB, Weight: 296 g and Dimensions: 137 mm x 80 mm x 38 mm.