Samson SA-SPHONE S-phone Headphone Mixer AmplifierCustomize Your Headphone Mix with Precision Introducing the Samson S phone Headphone Mixer Amplifier, a versatile solution for personalized monitoring. With four independent channels, each featuring multiple headphone outputs and auxiliary inputs, this unit provides exceptional control over individual headphone mixes. Channels: Four independent channels Headphone Outputs: Three outputs per channel Controls: Overall Volume control and individual Level