The Zoom MRS-4 Multitrack Portable Recording Studio is a versatile and compact digital recorder, perfect for recording your musical performances on-the-go. It features 2 line inputs and phono input/output ports for easy connectivity, along with a range of useful features such as battery-powered operation and support for SD cards. The device is manufactured by Zoom and belongs to the MRS-4B model. It is a must-have for any musician looking to capture their creativity wherever they go.