MLI1

Mono Passive Isolation Box

The Samson MLI1 is a passive, line-level isolation box designed to eliminate hum and buzz caused by ground loops and to convert unbalanced signals to balanced over long cable runs. Combining premium sound circuitry with durable, rugged construction, the MLI1 provides high-quality signal interconnection solutions for live, broadcast, and studio applications.

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Great for: Audio for Video, Theater / Production, Restaurant / Retail

Hum: Eliminated

The Samson MLI1 is a line-level passive isolation box designed to remove hum and buzz caused by ground loops, as well as to convert unbalanced signals to balanced signals for long cable runs. Combining premium sound circuitry with durable, roadworthy construction, the MLI1 provides high-quality signal connection solutions for live, broadcast, and studio applications.
Frequency Flatness

The MLI1 features Samson's STL transformer that delivers an extended, ruler flat frequency response from 10Hz–35kHz (±0.2dB) with ultra-low distortion. The transformer isolates the input signal from the output signal, removing any DC noise. The Ground Lift switch disconnects the ground from the Input and Output connections which eliminates hum caused by ground loops.
Roadworthy Construction

Housed in a 14-gauge steel chassis, the MLI1 is built to withstand the abuse of the most demanding live tours. Its rigid outer shell protects all the MLI1 internal connections, switches and solder joints from failure, ensuring quiet, reliable performance.

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

Frequency Response	10Hz–35kHz (±0.2dB typical), up to 75kHz (-1dB)
Dynamic Range	>140dB
Maximum Input	+15dBu @ 41Hz for <1% THD+N
Gain	+0.2dB
Rejection	50/60Hz 126dB typical
Equivalent Input Noise	-115dBu
Intermodulation Distortion	0.003%
Total Harmonic Distortion	0.0006%
Input Impedance	7.7kΩ
Output Impedance	600Ω nominal
Ground Lift	Disconnects ground from input to output connectors. Case is always grounded to outputs.
Input Connectors	XLR-1/4" combo
Output Connectors	XLR, 1/4" TRS
Chassis Construction	Powder coated, 14-gauge steel
Weight	0.7lb (0.32kg)
Dimensions	4.25" (110mm) x 2.25" (54mm) x 1.75" (46mm)