Zoom U-24 Portable 2x4 USB Handy Audio / MIDI Interface

Zoom U-24 is a compact 2-in / 4-out USB audio and MIDI interface for recording and performing at up to 24-bit/96kHz resolution.

Two low-noise mic preamps with switchable phantom power and XLR/TRS combo inputs
Input 1 Hi-Z switch for recording electric guitar or bass
2-in / 4-out configuration with separate TRS and RCA outputs and a dedicated headphone output
MIDI IN and OUT ports for keyboards, controllers and synthesizers
Class-compliant USB-B connection; runs on USB power or two AA batteries