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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.

Features & Benefits

  • 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 optional RK-3TR rack adapter.

Product Use Diagram

Product Specifications

Inputs1 balanced audio; +4dBu/600Ω on a detachable terminal block
Output1 balanced audio; +4dBu/600Ω on a detachable terminal block
Max Output Level+26dBu
Bandwidth20Hz to 20kHz
S/N Ratio-83dB @+4dBu/1kHz
ControlsDIP-switches to connect to chassis
Audio THD + Noise>0.025% @+4dBu/1000Hz
Operating Temperature0° to +40°C (32° to 104°F)
Storage Temperature-40° to +70°C (-40° to 158°F)
Product Dimensions W, D, H4.77" x 2.85" x 1.21" (12.12cm x 7.23cm x 3.07cm)
Product Weight0.5 lbs (0.2kg)