Check the listing for details. ART ART DUALZDIRECT 2 CHANNEL DIRECT BOX. Condition: New. Listed at 55.99 USD. The 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 DUALZDirect’s audio transformers have an extremely flat and wide frequency response and can handle high signal levels. This gives the DUALZDirect a very clean and neutral sound with a wide variety of signal sources and over long signal runs in high noise environments.The input ATTENUATORswitches allow for a wide range of signal levels and the input THRU jacks allows for tapping off of your signal chain.