Signal-to-Noise Ratio (SNR):112dB/ Connectivity Options (Main):microUSB / Headphone Out: 1 x 3.5mm jack/ Headphone Out / Mic In: 1 x 3.5mm jack/ Line In: 1 x 3.5mm jack (4-pole)/ Headphone Amp:Up to 600 Ohms/ Max Channel Output:Stereo/ Audio Technologies:SBX Pro Studio, CrystalVoice, Scout Mode/ Microphone:Microphone Type: Built-in mono microphone/