Balancing card (2x unbal-to-bal & 2x bal-to-unbal) R vs G graph added

Balancing amplifier with 2 balanced-to-unbalanced converters and 2 unbalanced-to-balanced converters on one 70x50 mm card. Only standard components used (no special ICs). Documents: audioxxx.googlepages.com/bal_card_block_diagram.pdf audioxxx.googlepages.com/bal_card_schematic.pdf audioxxx.googlepages.com/bal_card_layout_designations.pdf audioxxx.googlepages.com/bal_card_layout_values.pdf audioxxx.googlepages.com/bal_card_copper_mirror.pdf Gain resistor... Read more