Pricing and availability

We compare 600+ stores and found this item at 7 stores. Prices updated .

Sweetwater
5.0 (2)
$184.99
B&H
$184.99 $144.99 $40.00 · All time low
Thomann
4.0 (2)
$233.00 $231.00 $2.00 · All time low

Average Price: $177

Standard/Professional

$119

$300+

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Standard

High-end

Price History

Based on price data from 6 merchants for "Radial Highline Passive Line Isolator". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.

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Description

In the world of studio recording and live performances, maintaining the integrity of your sound is crucial. Enter the Radial Highline Passive Line Isolator, the unsung hero for musicians who rely on amp simulators. This compact marvel is engineered to transform your unbalanced line-outs into balanced signals, ensuring your sound travels distances without losing an ounce of clarity. At its heart are the premium Jensen 1:1 transformers, which not only preserve the full volume of your amp simulator but also offer a robust solution to ground loops and phantom power interference.

Whether you're in the studio or on stage, the Highline ensures your signal remains pristine. The unit's clever design includes a sum feature, allowing the input and thru jacks to function as a passive mixer, effortlessly converting stereo sources to mono. Should noise persist, a ground-lift switch is at the ready to eliminate any pesky hums. The Radial Highline is not just a tool; it's your sound's guardian, keeping your tones as vibrant and powerful as intended.

Key Features:

  • Converts unbalanced line-out to balanced, preventing signal degradation
  • Jensen 1:1 transformers for superior signal isolation and integrity
  • Breaks up ground loops and protects against phantom power
  • Sum feature turns input and thru jacks into a passive mixer for mono conversion
  • Equipped with a ground-lift switch for noise elimination
  • XLR and 1/4" inputs for versatile connectivity

Product specs

Type Guitar Simulaton Direct Box
Channels 1
Ground Lift Yes
Inputs 1 x 1/4" (input)
Outputs 1 x 1/4" (Thru), 1 x XLR (balanced out)

FAQs

What is the primary function of the Radial Highline Passive Line Isolator?

The Radial Highline Passive Line Isolator is designed to eliminate hum, buzz, and ground loops by isolating guitar or bass amp simulators from PA systems, ensuring clean signal transmission.

Does the Radial Highline Passive Line Isolator require power to operate?

No, the Radial Highline Passive Line Isolator is a passive device and does not require any external power to function.

Can the Radial Highline Passive Line Isolator handle stereo sources?

Yes, the Radial Highline Passive Line Isolator can sum stereo sources to a mono XLR output, making it versatile for various audio setups.

What type of transformer is used in the Radial Highline Passive Line Isolator, and why is it important?

The Radial Highline Passive Line Isolator uses a premium Jensen transformer, which is crucial for maintaining signal integrity and warmth over long cable runs.

How does the ground lift switch on the Radial Highline Passive Line Isolator help in audio setups?

The ground lift switch on the Radial Highline Passive Line Isolator helps eliminate noise issues such as hum and buzz by breaking ground loops in audio setups.

Radial Engineering

Radial Engineering

Highline and Highline Stereo Amp Sim Passive Line Isolators

Video thumbnail for Highline and Highline Stereo Amp Sim Passive Line Isolators by Radial Engineering

Highline and Highline Stereo Amp Sim Passive Line Isolators

Radial Engineering

Radial Engineering

Video thumbnail for Radial Engineering Highline & Highline Stereo NAMM 2025 by Premier Guitar

Radial Engineering Highline & Highline Stereo NAMM 2025

Premier Guitar

Premier Guitar

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