A used Grommes Precision G11T preamp-mixer that can be used for any 6 inputs configurations   microphone/auxilliary . This  used Grommes Precision G11T mixer are made in Usa . That is a high quality piece of enginering . This G11T mixer have : 6   XLR low-z 3 positions adjustable inputs, 6 Rca type aux. inputs , 2 X HI-Z outputs , 1 x patch output , 6 X speech filter switchs ,6 X volume controls , 1 X master gain control . What you see is what you buy. The mixer work fine and come with 6 X LT-9 impedance matching transformer .

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