Input: high-impedance, greater than 1 million ohms, maximum 1 volt peak-to-peak level. * Low-impedance, balanced, XLR output, 600 ohms, will drive long cables to mix-board. * Boost button with volume control for amplifying solos. * Treble control to boost or reduce treble. * Small Size: 1.25 x 2.25 x 4.25 inches. Weight: 10 ounces.