One 1/4 in. (0.25) TRS input and four 1/4 in. (0.25) TRS outputs. Splits a single headpone feed into four headpones or splits a single monitor feed to as many as four powered monitors. Balanced TRS inputs and outputs provide maximum isolation. The JIB/S allows you to split a signal to as many as four other sources. This is useful when you have up to four people who need the same monitor mix. The JIB/S works great with powered speakers, amplifiers, or headphones. The JIB/S has balanced TRS inputs and outputs, for use with balanced, unbalanced, and stereo left/right signals.