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Radial Engineering SRA PRO-ISO XLR Stereo Isolator Converter — main product image
Radial Engineering

Radial Engineering SRA PRO-ISO XLR Stereo Isolator Converter

★★★★★3.9 (25 reviews)
XLR

Radial Pro-Iso: Seamless Pro-to-Consumer Audio InterfaceThe Radial Pro-Iso is a versatile 2-channel interface, converting balanced +4dB XLR signals to unbalanced -10dB consumer levels via RCA, 1/8-inch, and 1/4-inch outputs. Perfect for recording, live streaming, and eliminating ground loop hum. ...

$209.99*
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*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.

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Overview

Radial Pro-Iso: Seamless Pro-to-Consumer Audio Interface

The Radial Pro-Iso is a versatile 2-channel interface, converting balanced +4dB XLR signals to unbalanced -10dB consumer levels via RCA, 1/8-inch, and 1/4-inch outputs. Perfect for recording, live streaming, and eliminating ground loop hum.

Specifications:

  • Type: 2-channel Passive Stereo Isolat Converter
  • Channels: 2
  • Input: XLR Balanced +4dB
  • Output: RCA, 1/8-inch, 1/4-inch Unbalanced -10dB
  • Features:
    • Ground Lift
    • Variable Output Level Control
    • Electrically Isolated XLR Connectors
    • Heavy-Duty 14 Gauge Steel Welded I-beam Enclosure
  • Material: Steel
  • Dimensions: 6.3 x 4.2 x 3 inches
  • Weight: 1.1 pounds

Key Features

2-channel Passive Stereo +4dB to -10dB Isolat Converter with Ground Lift Variable Output Level Control

Specifications

Channels
2-channel Stereo
Type
Passive Isolator Converter
Input/Output Level Conversion
+4dB to -10dB
Noise Reduction
Ground Lift
Control
Variable Output Level
Connectors
XLR

Pros & Cons

👍 Pros

  • This Radial Engineering unit functions as a 2-channel passive stereo isolator, effectively eliminating ground loop hum and noise.
  • It features a +4dB to -10dB level converter, allowing seamless integration between professional and consumer audio equipment.
  • Equipped with a ground lift function, which further assists in resolving noise issues caused by differing ground potentials.
  • Offers variable output level control, providing precise adjustment of the signal to match receiving equipment.
  • As a passive device, it requires no external power, simplifying setup and operation in various audio environments.

👎 Cons

  • Specific details regarding the frequency response of the isolator are not provided, which could impact audio transparency.
  • The type of transformers used for isolation is not specified, limiting insight into the audio quality and characteristics.
  • Information on the input impedance and output impedance is not available, which can be critical for proper signal matching.
  • No details are given regarding the physical dimensions or weight of the unit, which might be relevant for rack mounting or portability.
  • The product is described as an isolator and converter, but additional features like overload protection are not mentioned.

Frequently Asked Questions

The Radial Engineering SRA PRO-ISO is primarily a 2-channel passive stereo isolator and level converter designed to eliminate ground loop noise and match audio signal levels.
Yes, it functions as a +4dB to -10dB isolat converter, allowing you to interface between professional (+4dB) and consumer (-10dB) audio gear.
The ground lift feature helps to eliminate hum and buzz caused by ground loops, which occur when different pieces of audio equipment have different ground potentials.
No, the Radial Engineering SRA PRO-ISO is a passive device, meaning it does not require any external power source for operation.
Yes, the SRA PRO-ISO features variable output level control, allowing you to fine-tune the signal strength to match your receiving equipment.

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