DualZDirect Dual Pro Passive Direct BoxThe DUALZDirect provides two independent high quality totally passive interfaces that let you connect instrument, line, or speaker level signals to a mixer or other balanced inputs through high performance audio isolation transformers. Each of the high impedance single ended 1 4 inputs is converted by a transformer into an isolated, balanced, low impedance signal output. The DUALZDirects audio transformers have an extremely flat and wide frequency