Radial TWIN ISO Passive Line-Level Isolator (Standard)

Destroy ground loop buzz and electrical field hum. Equipped with the world's finest Jensen Audio Transformers, the Radial Twin-Iso is a no-excuse problem solver that provides exceptional audio performance while eliminating ground loops. It features 2 +4dB line-level floating channels with XLR input and output connectors for easy interfacing.

Nickel-laminated Jensen JT-11P1 isolation transformers and insulated XLRs provide 100% isolation. As a unity-gain device it boasts 10Hz-40kHz response and balanced, 10kohm input impedance. Jensens do not introduce problems such as phase shift or group delay, which can cause bass to sound muddy and indistinct.

This is of utmost importance when interfacing advanced line array systems where maintaining phase relationships is paramount to achieving the controlled dispersion pattern. Jensen Transformers are legendary for their warm Bessel curve and for their ability to handle transients without overload or ringing.

The Radial TWIN-ISO Passive Line-Level Isolator is a high-quality, professional-grade device designed to eliminate noise, hum, and ground loops from audio signals in live and studio environments. Built with Radial's renowned attention to detail and rugged construction, the TWIN-ISO ensures pristine sound by using premium Jensen transformers to provide isolated, balanced line-level outputs. Whether you're working in broadcast, live sound, recording, or installations, the TWIN-ISO delivers clean and reliable signal isolation for stereo or dual mono audio paths.

At its core, the Radial TWIN-ISO is a passive isolator equipped with two isolation transformers that provide full galvanic isolation between input and output signals. This is particularly important in eliminating issues caused by ground loops, which are a common cause of hum and buzz in audio systems. The passive nature of the TWIN-ISO means that no external power is required for operation, making it a hassle-free and highly portable solution.

Designed for high-fidelity audio applications, the TWIN-ISO uses Jensen transformers, which are considered among the best in the industry. These transformers ensure minimal phase distortion, ultra-flat frequency response, and exceptionally low noise. This translates to transparent audio quality that retains the integrity of the original signal while eliminating unwanted interference.

Dual-Channel Line-Level Isolation: The TWIN-ISO is equipped with two isolated channels, each featuring its own dedicated transformer. This makes it perfect for stereo applications or splitting two mono signals, ensuring that each signal path is fully isolated from the other. This is particularly useful in complex audio setups where multiple pieces of equipment need to be interconnected without introducing noise or ground loops.

Premium Jensen Transformers: Radial has chosen Jensen transformers for the TWIN-ISO due to their industry-leading performance. These transformers offer outstanding signal integrity, with extremely low phase distortion, flat frequency response, and the ability to handle high signal levels without distortion. This makes the TWIN-ISO suitable for professional audio environments where sound quality is paramount.

Passive, No Power Required: As a fully passive device, the TWIN-ISO does not require any external power source to operate. This means you can use it in any location, without worrying about power supply or batteries. Its passive design also contributes to the unit's reliability, as there are no electronic components that can fail over time.

The TWIN-ISO features balanced XLR inputs and outputs, allowing for easy integration into professional audio systems. Balanced connections provide better noise rejection and are ideal for long cable runs, ensuring clean audio signals even in electrically noisy environments. The XLR connectors are robust and provide secure, professional-grade connections.

One of the primary purposes of the TWIN-ISO is to eliminate unwanted hum, buzz, and ground loops in audio systems. Ground loops occur when there is a difference in electrical potential between different pieces of equipment connected to the same audio system. By isolating the ground between input and output, the TWIN-ISO effectively removes these issues, resulting in clean and noise-free audio.Built to Radial's legendary standards, the TWIN-ISO is housed in a solid 14-gauge steel enclosure.

This not only protects the internal components from damage but also provides excellent shielding from electromagnetic interference (EMI) and radio frequency interference (RFI). The compact design makes it easy to transport and integrate into any setup, while the durable construction ensures it can withstand the rigors of professional use.

The TWIN-ISO is designed to be versatile and can be used in a wide variety of applications. Whether you need to isolate line-level signals between a mixing console and a recording interface, eliminate noise when connecting audio systems in different rooms, or balance unbalanced signals for long cable runs, the TWIN-ISO is a perfect fit. It’s ideal for live sound, broadcast, recording studios, AV installations, and more.

Thanks to the Jensen transformers, the TWIN-ISO delivers an exceptionally flat frequency response from 20 Hz to 20 kHz, ensuring that your audio signal remains true to the original. The high headroom allows the unit to handle +24 dB signals without distortion, making it suitable for use with high-output professional audio gear.

The TWIN-ISO comes equipped with a ground lift switch for each channel, allowing you to further eliminate ground loop issues by disconnecting the ground between input and output. Additionally, each channel also features a 15 dB pad, which can be engaged to attenuate hot signals and prevent distortion when dealing with high-output sources.

Features

• Dual Channel Isolation: Isolates two independent channels to eliminate hum and ground loops.
• Premium Jensen Transformers: Ensures clean, distortion-free audio with minimal signal loss.
• Passive Operation: No external power required, making it highly portable and reliable.
• Balanced XLR Inputs/Outputs: Ideal for professional line-level applications with easy integration.
• Ground Lift Switch: Removes ground loops for noise-free operation.

Specifications

• Frequency Response: 20 Hz to 20 kHz (+/- 0.2 dB)
• Input Impedance: 10k Ohms
• Output Impedance: 600 Ohms
• Maximum Input Level: +24 dB @ 1 kHz
• Connections: XLR input/output (2 channels)
• Dimensions: 3.25" x 5.0" x 1.75"
• Weight: 1.6 lbs (725 g)
• Construction: 14-gauge steel