Samson MLI1 Mono Passive Isolation Box

The Samson MLI1 Mono Passive Isolation Box 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.

Product Specification:

Type: Mono passive isolation box

Frequency Response: 10 Hz to 35 kHz (±0.2 dB typical), up to 75 kHz (-1 dB)

Maximum Input: +15 dBu @ 41 Hz for < 1% THD+N

Rejection: 50/60 Hz 126 dB typical

Equivalent Input Noise: -115 dBu

Intermodulation Distortion: 0.003%

Total Harmonic Distortion: 0.0006%

Input Impedance: 7.7 kOhms

Output Impedance: 600 Ohms nominal

Transformer: Samson STL

Ground Lift: Disconnects ground from input to output

Connectors: Input: XLR-1/4" / 6.35 mm combo

Construction: Powder coated, 14-gauge steel chassis

Dimensions: 4.3 x 2.1 x 1.8" / 110.0 x 54.0 x 46.0 mm

Weight: 11.3 oz / 320.0 g

Package Weight: 0.79 lb

Box Dimensions (LxWxH): 5 x 2.75 x 2.5"