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PATENTS 4,234,804 4,316,107 4,329,598 4,331,931 4,377,792 4,403,199 4,409,500 4,425,551 4,434,380 4,454,433 4,471,324 4,473,793 OTHER PATENTS PENDING PHONE: TIP RING SLEEVE XLR: PIN 1 PIN 2 PIN 3 INPUT Jacks (CHANNEL 1 and 2): Use 1/4O phone plugs or male XLR plugs to connect these inputs to your source. The 266XL’s INPUT jacks accept either balanced or unbalanced signals. Input impedance is >40k.. OUTPUT Jacks (CHANNEL 1 and 2): The OUTPUT jacks accept 1/4O balanced or unbalanced phone plugs or