Passive Stereo Line Isolator

The StageBug SB-6 is a  two-channel passive audio isolator designed to accommodate both balanced and unbalanced signals and effectively eliminate noise when used with instruments, consumer electronics, or professional line-level devices.

Problem solver for stereo systems

The SB-6 helps remove noise from two channel audio systems, stereo guitar racks, and pedalboards. Two on-board isolation transformers provide a flat frequency response from 20Hz to 20kHz, while removing hum and buzz from ground loops. Dual ground lift switches help further reduce noise, and a -15dB pad allows you to handle high volume outputs without distortion. When using the SB-6 before a set of powered speakers or guitar amplifiers, a polarity reverse switch corrects frequency cancellation and ensures both speakers play back in phase with one another. The SB-6 is completely passive with no need for power, so it's easy to insert into any system to remove noise quickly.

StageBug SB-6 Applications

Using the SB-6 in a stereo setup

Isolate the output from a DJ Mixer to a power amp using the SB-6 to eliminate hum and buzz caused by ground loops. Either ¼" mono or TRS connectors may be used.

Using the SB-6 in a pro setup

When running multiple speakers, you can often encounter noise due to imperfect power systems and DC offsets. Use the SB-6 to isolate distant loudspeakers to solve the problem.

Using the SB-6 in a guitar rig

Eliminate noise in your guitar setup by isolating the guitar amp from other electronic devices. This SB-6 works great between your pedalboard or with your wireless system.

The SB-6 is a passive isolator that has been designed to work with both balanced and unbalanced signals. As detailed in the graphs below, the SB-6 is exceptionally linear throughout the audio range and exhibits nearly flawless phase shift even in the lower registers. Very low distortion from -40dB to +10dB makes the SB-6 ideally suited for instruments, consumer audio devices and pro-balanced audio signals, while the compact size makes it easy to integrate in just about any situation.

Features

• Isolator for balanced and unbalanced signals
• Eliminates hum and buzz caused by ground loops
• Exceptionally linear from 20Hz to 20kHz
• Automatically configures for hi-Z or lo-Z signal chains
• Audio circuit type : Passive Transformers
• Transformer : Eclipse Custom
• Frequency response : 20Hz-20KHz +/-1db
• Dynamic range : >140db
• Gain : -2dB
• Total harmonic distortion : <0.0008% @ 1kHz
• Phase Deviation : >5° @ 30Hz
• Input Impedance : Varies with Load/47K
• Output Impedance : 600Ω
• Maximum Input : >+25dBu
• Input pad, 180° polarity reverse, Ground lift
• Input Connectors : 1/4" TRS
• Output Connectors : 1/4" TRS

General

• Construction : 14 gauge steel chassis & outer shell
• Size (L x W x D) : 3.92" x 2.54" x 1.7" (100mm x 65mm x 43mm)
• Power : Passive, no power required
• Conditions : For use in dry locations only between 5°C and 40°C