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RDL TX-1A Adjustable Balanced to Unbalanced Line Transformer

BH #RDTX1A • MFR #TX-1A
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RDL TX-1A Adjustable Balanced to Unbalanced Line Transformer
Key Features
  • Balanced to Unbalanced Audio Equipment
  • Balanced Line Input
  • Unbalanced Line Output
  • Adjust Out 4 to 24 dB Below Input Level
The TX-1A Adjustable Balanced to Unbalanced Line Transformer from RDL is a device that can be used to add transformer isolation between a balanced line and an unbalanced input. The input can be 10 Kilohms bridging or 600 Ohms terminated. Level output can be adjusted from 4 to 24 dB below the input level.
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RDL TX-1A Overview

The TX-1A Adjustable Balanced to Unbalanced Line Transformer from RDL is a device that can be used to add transformer isolation between a balanced line and an unbalanced input. The input can be 10 Kilohms bridging or 600 Ohms terminated. Level output can be adjusted from 4 to 24 dB below the input level.

Transformer Isolation Between Balanced & Unbalanced Lines
This device can be used to add transformer isolation between a balanced line and an unbalanced input.
Input Options
The input can be 10 Kilohms bridging or 600 Ohms terminated.
Adjustable Output
Level output can be adjusted from 4 to 24 dB below the input level.
UPC: 813721011404

RDL TX-1A Specs

Construction
Plastic
Metal
Finish
Black
Gray
Input
10KΩ bridging or 600Ω terminated
Output
Adjustable 4 to 24dB below input level
Frequency Response
20Hz to 20kHz (+/- 0.5dB)
THD + N
< 0.05% (1kHz)
Dimensions
Not specified by manufacturer
Packaging Info
Package Weight
0.31 lb
Box Dimensions (LxWxH)
4.05 x 2.1 x 2.1"

RDL TX-1A Reviews

Great tool

By David
Rated 5 out of 5
Date: 2026-08-24

RDL is the best. They have all the little boxes that audio engineers need to fix those pesky design problems. I needed to send the audio from an iPad mounted in the wall 100' from my mixer/amplifier. This box combines the left and right channels from the iPad and then using a transformer turns the signal into a mono mix balanced signal that makes it easy to send over a balanced audio cable a long distance. Thanks RDL you always have what I need.

does what it says

By randy g.
Rated 5 out of 5
Date: 2014-10-08

Allows balanced audio over long runs where destnation terminal is unbalanced. Reduces/removes induced noise on long run.

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