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RDL TX-8A 4 and 8 Ohms Input Interface

SKU: RDTX8A MFR: TX-8A
$98.01
$130.68
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Key Features

  • Achieve superior sound quality with this audio interface's galvanic isolation.
  • Easily connect your pro audio equipment using the versatile barrier block.
  • Optimize loudspeaker management with adjustable output levels for balanced sound.
  • Enjoy a broad 20-20,000 Hz frequency response for clear, full-spectrum audio.
  • Durable build ensures long-lasting performance in any recording studio setup.
  • This user-friendly audio transformer adapts to 4 or 8 Ohm input for great value.
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Special Order?Estimated to Ship: 08/19/2025
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RDL TX-8A Specifications

  • Input Connector

    1 x Barrier block

  • Minimum Input Level

    For +4 dBu output: 8 W at 8 Ohms or 16 W at 4 Ohms
    For -10 dBV output: 0.5 W at 8 Ohms or 1 W at 4 Ohms

  • Maximum Input Level

    400W

  • Attenuation

    16 dB to 34 dB (input to output)

  • Output Connector

    1x Barrier block

  • Output Level

    -10 dBV unbalanced or +4 dBu balanced, adjustable (10 kOhms load)

  • Isolation

    Galvanic bifilar wound audio transformer

  • Frequency Response

    20 to 20,000 Hz (+/- 0.75 dB)

  • THD

    <0.1% (1 kHz); <1% (20 to 20,000 Hz)

  • Power Requirement

    Passive

  • Dimensions (HxWxD)

    With Case: 3 x 1.2 x 1.5" (7.62 x 3.05 x 3.81cm)
    With Connectors: 3 x 1.2 x 1.8" (7.62 x 3.05 x 4.57cm)

  • Weight

    0.32 lbs (0.15kg)

  • UPC Code

    813721016294

About RDL TX-8A

How can you ensure superior audio quality and seamless integration between your power amplifier and audio mixing equipment The TX-8A 4 and 8 Ohms Input Interface is your professional solution, expertly designed to facilitate transformer coupling with unparalleled precision. Whether you're connecting the output of a 4 or 8 Ohm power amplifier to the input of an audio mixer or another amplifier, the TX-8A stands out as the quintessential component for high-fidelity audio systems.

Featuring a front-panel LEVEL control, the TX-8A allows meticulous adjustment of the output level, ranging from -10 dBV to +4 dBu. This flexibility ensures compatibility across a broad spectrum of amplified power levels, making it a versatile tool for audio professionals. As a single-channel (mono) module, it boasts barrier block connections for both input and output, streamlining the installation process and maintaining a clean setup.

At the heart of the TX-8A lies a high-quality bifilar wound audio transformer, expertly engineered to couple the audio input to the output without compromise. This transformer not only ensures the integrity of your audio signal but also provides galvanic isolation, which is crucial for eliminating hum and interference that can degrade audio quality.

The design of the TX-8A ensures that the amplified input terminals are isolated from ground, while the output ground terminal is securely connected to the module's robust metal support structure. This thoughtful engineering promotes safety and system stability.

Whether you require balanced or unbalanced wiring, the TX-8A's secondary can accommodate your needs, delivering wideband audio with low distortion. Its exceptional audio clarity and ample headroom are hallmarks of professional-grade equipment, making it a reliable choice for general-purpose audio installations.

The TX-8A's superior low-frequency response is especially beneficial for driving the line-level input of a subwoofer amplifier, ensuring deep, resonant bass that can truly enhance an audio experience. For stereo installations, two TX-8A modules can be used in tandem to mix outputs, feeding a mono audio line or a subwoofer amplifier line input with ease.

Compact in size, the TX-8A offers flexible mounting options to suit a variety of spaces. It can be installed in equipment racks, attached to rack sides, or positioned on either the front or rear rack rails, thanks to a range of RDL mounting options. This adaptability allows you to optimize your audio setup without compromising on space or accessibility.

Integrate the TX-8A into your audio system, whether as a standalone solution or in conjunction with other RDL products, to achieve an audio/video system that exemplifies professional audio quality and reliability.

RDL TX-8A Features

  • Converts an Amplifier Output to Line Level
  • Bridges 4 or 8 Ohms Speaker Line
  • Adjustable for Wide Range of Input Power Voltage
  • Converts Amplified Levels from 0.5 W to 400 W
  • Excellent Low Frequency Response
  • Suitable to Feed a Subwoofer Amplifier Input
  • Detachable Terminal Block Connections
  • Balanced or Unbalanced Output
  • Superior Quality Audio Transformer
  • Bifilar Windings
  • Galvanic Isolation
  • Convenience of RDL TXs

Product Documents

User Manual

Key Features

  • Achieve superior sound quality with this audio interface's galvanic isolation.
  • Easily connect your pro audio equipment using the versatile barrier block.
  • Optimize loudspeaker management with adjustable output levels for balanced sound.
  • Enjoy a broad 20-20,000 Hz frequency response for clear, full-spectrum audio.
  • Durable build ensures long-lasting performance in any recording studio setup.
  • This user-friendly audio transformer adapts to 4 or 8 Ohm input for great value.

What's in the box:

  • RDL TX-8A 4 and 8 Ohms Input Interface
  • RDL 3 Year Limited Warranty