S-monitor is a discontinued mini monitor and headphone amplifier designed for personal monitoring on stage or in the studio. It provides an XLR microphone input with a Thru output to feed a main mixer, and a 1/4" stereo mix input with a 1/4" mix Thru for daisy-chaining additional units. Separate microphone and mix volume controls, two headphone outputs, and an included 18 V AC adapter support flexible use in both live and studio environments.