Unbalanced Input Transformer - Unbalanced stereo inputs to summed balanced mono output

  • Mix two unbalanced audio signals to mono balanced
  • Combine stereo into mono with balanced output
  • Unbalanced to balanced conversion without gain
  • Hum cancellation on unbalanced line inputs
  • Frequency response 30 Hz to 20 kHz (+/- 1 dB)


The TX-J2 is the ideal choice in installations requiring the passive mixing of two unbalanced line-level audio sources to feed a balanced (or unbalanced) audio output.

The TX-J2 is a complete unbalanced line-level audio input module. The front panel features two gold plated phono jacks, intended for mono or stereo consumer level sources. Inputs 1 and 2 are combined and balanced through audio transformers configured to reject induced hum. The line-level output is provided on the front-panel detachable terminal block for connection to 10 kΩ or higher input impedance line-level module or equipment inputs.

Note: The TX-J2 is a passive module that does not add gain to the consumer level input. Therefore, the balanced output level from the module is not a standard +4 dBu. For installations where a +4 dBu balanced line-level is required, or if the input level is particularly low, RDL’s TX-LC2 is recommended.

Wherever consumer format audio signals need to be converted to a balanced line without gain, the TX-J2 is the ideal choice. Use it individually or in conjunction with other RDL products as part of a complete audio/video system.


Ambient Operating Environment:0° C to 55° C
Package Type:Cardboard Box
WEEE weight:0.28 lbs.
Shipping Weight:0.335 lbs.
Tariff code:8543.70.9860
Package Dimensions:2 x 2 x 4 in.

Related Products

Transformer Products
  • AV-AC2

    Cable Kit for AV-HK1 - Dual RCA to Mini-Plug; Dual RCA to Mini-Jack

Connector Plates
  • White wall mount audio interface


    Consumer Input Jacks - Mono

    Customizable Text

  • D-CIJ3D

    Consumer Input Jacks - Stereo

    Customizable Text

  • D-J2

    Line Input Assembly

    Customizable Text

  • DS-CIJ3

    Consumer Input Jacks - Mono

    Customizable Text

  • DS-CIJ3D

    Consumer Input Jacks - Stereo

    Customizable Text

  • DS-J2

    Line Input Assembly

    Customizable Text

  • TX-LC2

    Unbalanced to Balanced Line Combiner

Related Products

General Mounting Accessories
  • MB-1

    Mounting Kit - RU, ST and TX Series

  • MB-2

    Mounting Kit - RU and TX Series

  • MB-3

    Kit to Mount ST, TX Series Modules on FP Panel

  • SR-4

    STICK-ON Series Mounting Rack - 7 modules

DIN Rail Mounting Accessories
TX™ Mounting Accessories
  • TX-HRA3

    10.4" Rack Mount for 3 TX Series Products

  • TX-RA5

    TX Series 19" Racking System - 5 modules 1RU

  • TX-RRB1

    Rear rack rail mounting kit for any TX series module

Pole Mounting Accessories
  • RC-HPS1

    10.4" Rack Mount for Desktop Power Supply and TX Module




CAD FilesUnitsFormat
Engineering Functional BlockAmericanDXF
Panel Diagram - FrontAmericanDXF
Panel Diagram - FrontMetricDXF
High Res ImagesFormat
Declaration of Conformity