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The ART Zdirect is a high quality totally passive interface that lets you connect instrument, line, or speaker level signals to a mixer or other balanced input thru a high performance audio isolation transformer. The high impedance single-ended 1/4″ input is converted by the transformer into an isolated balanced low impedance signal source. The Zdirects audio transformer has an extremely flat and wide frequency response and can handle high signal levels while still maintaining an isolated balanced low impedance output. This gives the Zdirect a very clean and neutral sound with a wide variety of signal sources and over long signal runs in high noise environments.

The Input Attenuator switches allow for a wide range of signal levels and the Input Thru jack allows for tapping off of your signal chain. The Ground Lift switch lets you totally separate the input and output signal grounds, when appropriate, to isolate two systems, thereby reducing hum and ground-loop noise.

  • Fully passive, high performance transformer design. No battery required.
  • Converts 50k Ohm inputs into 600 Ohm balanced outputs
  • Switchable input attenuation (0, -20, -40 dB) Switchable low pass filter
  • Switchable phase invert
  • Switchable ground lift (fully isolates inputs from chassis and outputs)
  • XLR connectors for balanced outputs
  • Rugged extruded aluminum case


Frequency Response: 10Hz -50kHz, +/-.5dB @ +4dBu

THD: .01% Typical @ 1kHz, +18dBu, <.05% @ 100Hz, +18dBu

Input Connections: ¼ – inch TRS unbalanced, 50k Ohm

Output Connections: XLR male balanced, 600 Ohm

Output Phase: Switchable, Normal/Invert

Ground Lift: Switchable, fully isolates inputs from chassis and output

Input Attenuation: Switchable, (0dB, -20dB, -40dB)

Filter Type / Response: Switchable, Low Pass, -3dB @30kHz

Dimensions: 44.5 x 107 x 89 mm

Weight: 0.35 kg


For more information, please visit the manufacturer's website.