High-quality microphone preamplifier with gain and output level adjustment. - Model: ME-1NV - Input Terminals: XLR, 1/4 inch jack - Output Terminals: XLR, 1/4 inch jack - Adjustment Functions: Gain adjustment, Output level adjustment - Power Supply: AC power Thank you for viewing. Purchased from Soundhouse, selling to organize my equipment. I found the original box while cleaning! If it doesn't sell by the end of the year, I'll give it to a friend. Thank you.