TR-1A Balanced Mono Audio Isolation Transformer

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The TR-1A is a high-performance isolation transformer for balanced mono audio signals. It completely isolates devices to eliminate hum, ground loops and DC offsets that can degrade the audio quality.

  • S/N Ratio — — 83dB @+4dBu, 1kHz.
  • External Input & Output Ground Terminals.
  • Grounding Options — DIP–switch selectable.
  • Passive — No power required.
  • Compact Kramer TOOLS™ — 3 units can be rack mounted side–by–side in a 1U rack space with the recommended rack adapter.


    • Broadcast and production audio/video studios.
    • Audio/video duplication studios.
    • Staging and fieldwork.