DAC dedicated current transmission analog output board, which can be used in balance or single-ended, output current and voltage audio signals, one-stage parallel voltage stabilization, current mode 2 pairs of tubes parallel output, a set of 2 boards (blank board, without any components ),Plate: 2MM plate thickness, copper thickness: 2oz, heavy goldSingle board size: 120MM*192MM This board requires buyers to understand the circuit structure and install it by themselves. The board only mentions the component list, and does not provide any other information including the schematic diagram, and there is no after-sale technical support.