Samson

Samson MLI1 Mono Passive Isolation Box

4.9 (26 reviews)
XLR10Hz–35kHz

Eliminate Noise and Optimize Signal with the Samson MLI1 Isolation Box The Samson MLI1 is a passive isolation box designed to eliminate hum and buzz caused by ground loops. With premium sound circuitry and rugged construction, it delivers high-quality signal isolation for live and studio applicat...

$59.99*
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*Price sourced from Amazon.com. Last updated:Jun 19, 2026.Price and availability are subject to change.

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Overview

Eliminate Noise and Optimize Signal with the Samson MLI1 Isolation Box

The Samson MLI1 is a passive isolation box designed to eliminate hum and buzz caused by ground loops. With premium sound circuitry and rugged construction, it delivers high-quality signal isolation for live and studio applications.

Specifications:

  • Type: Mono Line Isolation Box
  • Transformer: Samson STL Transformer
  • Frequency Response: 10Hz–35kHz (±0.2dB)
  • Input/Output Connections: 1/4" and XLR
  • Feature: Ground Lift Switch
  • Chassis: 14-gauge Steel

Key Features

Mono line isolation box eliminates hum and buzz caused by ground loops

Samson STL transformer isolates input and output signals

Flexible connectivity with 1/4" and XLR input and output connections

Ruler flat frequency response from 10Hz–35kHz

All-metal, impact resistant design

Specifications

Channels
Mono
Function
Line isolation box
Transformer
Samson STL transformer
Input Connections
1/4", XLR
Output Connections
1/4", XLR
Frequency Response
10Hz–35kHz
Design Material
All-metal

Pros & Cons

👍 Pros

  • Effectively removes hum and buzz from audio signals caused by troublesome ground loops.
  • Utilizes a Samson STL transformer to ensure complete isolation between input and output signals.
  • Offers flexible connectivity options with both 1/4" and XLR input and output connections.
  • Maintains a ruler-flat frequency response from 10Hz to 35kHz for faithful audio reproduction.
  • Features an all-metal, impact-resistant design for enhanced durability in various environments.

👎 Cons

  • As a mono device, it requires two units if stereo signal isolation is needed for an audio setup.
  • Being a passive unit, it does not provide signal boosting, only isolation, which might require additional gain stages.
  • The specific Samson STL transformer, while effective, is a proprietary component which could limit repair options.

Frequently Asked Questions

The Samson MLI1 Mono Passive Isolation Box is designed to eliminate hum and buzz in audio signals, which are typically caused by ground loops.
It utilizes a Samson STL transformer to effectively isolate the input and output signals, preventing electrical interference from passing through.
The MLI1 offers flexible connectivity with both 1/4" and XLR input and output connections, making it compatible with a range of professional audio equipment.
No, the unit is engineered to provide a ruler-flat frequency response from 10Hz to 35kHz, ensuring that the audio signal remains unaffected.
Yes, it features an all-metal, impact-resistant design, ensuring robust durability for various studio or live sound applications.