TRF-KIT DMA 82 Tuned Radio Frequency Receiver for DMA 82 AmpTRF KIT DMA 82 is a 2 line transformers kit that allows to convert each DMA 82 amplifier low impedance speakers output into a 100V constant voltage line. In this way a DMA 82 will feature 2 independent high impedance channels. Product Features Compatible with DMA 82 Low to high impedance output lines Compatible with RM KIT DMA accessory Metal case black RAL 9005 1 2 19", 1U Product Specifications Cabinet Case Material: Metal Colour: Black Rack