Pricing and availability

We compare 600+ stores and found this item at 9 stores. Prices updated .

Sweetwater
4.0 (8)
$159.99
Amazon
4.4 (57)
$124.99
Reverb
5.0 (8)
$124.99 New
$89.00 Used
Thomann
4.7 (42)
$175.00
Gear4Music
£165.25

Average Price: $142

Standard/Professional

$75

$151+

Price Tier

Budget

Standard

High-end

Price History

Based on price data from 7 merchants for "Radial Stagebug SB-6". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.

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Description

Step into a world of clear, noise-free audio with the Radial Stagebug SB-6. This compact, passive stereo line isolator is designed to eliminate the notorious 60Hz hum and buzz caused by ground loops, making it indispensable for any musician or audio technician dealing with mixed audio sources. Whether you're connecting a guitar, DJ equipment, or consumer-level gear to professional audio setups, the SB-6 ensures a clean, uncolored signal path thanks to its dual isolation transformers.

With a frequency response that's exceptionally linear from 20Hz to 20kHz, you can trust the SB-6 to preserve the integrity of your sound. Its dual ground-lift switches and a handy -15dB pad provide additional noise reduction and protection from high output sources, respectively. The polarity reverse switch is a lifesaver when dealing with stereo playback systems, ensuring your audio remains in phase and free from frequency cancellations.

Crafted with a robust metal housing, the SB-6 is built to withstand the rigors of live performances and studio sessions alike. Best of all, its passive design means no power is required, making setup a breeze and allowing you to focus on what truly matters—your music.

Key Features:

  • Eliminates hum and buzz with dual isolation transformers
  • Linear frequency response from 20Hz to 20kHz
  • Works with both balanced and unbalanced signals
  • Dual ground lift switches for noise reduction
  • -15dB pad handles high output sources without distortion
  • Polarity switch for correcting stereo playback phase issues
  • Compact, rugged metal housing for durability

Owner's manual

Radial Stagebug SB-6 User Manual

Product specs

Available since December 2014
Multi-Channel Unit Yes
Channels 2
Active / Passive Passive
19" No
Pad switchable Yes
Gnd/Lift switchable Yes
Powered by battery No
Speaker Simulation No

FAQs

What is the primary function of the Radial Stagebug SB-6?

The Radial Stagebug SB-6 is a passive stereo line isolator designed to eliminate hum and buzz caused by ground loops, making it ideal for use in live and studio applications where clean signal transfer is crucial.

Does the Radial Stagebug SB-6 require any power source to operate?

No, the Radial Stagebug SB-6 is a passive device and does not require any external power source or batteries to function.

Can the Radial Stagebug SB-6 be used with both mono and stereo signals?

Yes, the Radial Stagebug SB-6 is a multi-channel unit capable of handling both mono and stereo signals, making it versatile for various audio applications.

Does the Radial Stagebug SB-6 have a ground lift feature?

Yes, the Radial Stagebug SB-6 includes a ground lift switch, which helps to further eliminate hum and noise by disconnecting the ground loop between connected equipment.

Is there a pad switch on the Radial Stagebug SB-6 for adjusting signal levels?

Yes, the Radial Stagebug SB-6 features a pad switch that allows you to adjust the signal levels, providing flexibility when connecting to different audio sources.

HarmonyCentral

HarmonyCentral

Radial Stage Bugs direct boxes

Video thumbnail for Radial Stage Bugs direct boxes by HarmonyCentral

Radial Stage Bugs direct boxes

HarmonyCentral

HarmonyCentral

Reviews

PROS

  • Eliminates ground loop hum effectively when placed correctly

  • Versatile, works with various setups including stereo and FOH systems

  • Passive device with ground lift and phase switch features

  • Solid and durable construction

  • Does not add noise to the signal

  • Maintains signal integrity, preserving highs

  • Useful PAD and polarity switches for specific needs

  • Small and portable, fits under pedalboards or in toolkit

  • Can solve noise issues without level attenuation

  • Helps in interfacing between different equipment smoothly

CONS

  • Requires proper placement to work, not always plug-and-play

  • May cause a noticeable volume drop in certain setups

  • Does not work for all types of noise, e.g., single coil noise

  • In some cases, might not be as effective as other specific solutions (e.g., compared to SESCOM IL-STEREO-19 for certain hum issues)

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Radial Stagebug SB-6.

Features and functionality

  • The Radial Stagebug SB-6 is effectively used between the guitar and amp to address grounding issues, helping reduce noise in certain setups.

    Source
  • The Stagebug SB-6 includes both stereo inputs and outputs, along with a polarity switch for phase adjustment and ground lifts, which can be crucial for stereo setups.

    Source
  • Users highlight the utility of placing the Stagebug SB-6 between noisy synth instruments and the mixer to effectively isolate and reduce hum in complex setups.

    Source
  • It's noted that isolating the line before the mixer can provide a more targeted solution for addressing noise issues originating from specific instruments rather than from the whole setup.

    Source

Use cases and applications

  • Experimenting with the Stagebug at different points in the signal chain can help identify and reduce hum caused by pedals on different circuits.

    Source
  • The Stagebug SB-6 is recommended for troubleshooting noise in rigs where other solutions like power conditioners have failed to resolve the issue.

    Source
  • The Radial Stagebug SB-6 is particularly recommended for resolving stereo ground loop issues in complex stereo setups with multiple amps, such as Vox AC-15 and AC-30.

    Source
  • The Stagebug SB-6 is considered effective for isolating noise specifically from synths like the TR-8S, TR-6S, and TB-3, as reported by users experiencing noise issues in their setups.

    Source
  • The Stagebug SB-6 can be integrated into setups with multiple pedals powered by a Strymon Okai R30, known for its isolated power, to help manage noise.

    Source

User experience

  • Some users report that the Stagebug can be a better solution than a noise gate, as it addresses the source of hum rather than just masking it.

    Source
  • Users note that using the Stagebug SB-6 can enhance sound fullness and volume when compared to some stereo pedal setups directly into amps.

    Source

Comparisons

  • Unlike the Lehle P-Split, the Stagebug SB-6 offers stereo in and outs, providing a more suitable solution for setups requiring two input connections from stereo pedals.

    Source

Setup and maintenance

  • When troubleshooting noise, users recommend checking headphone outputs first, as isolators between consoles and speakers won't help if noise is present in headphones.

    Source

5.0 out of 5

Based on 1 Review and 4 Ratings

5 star
4 star
3 star
2 star
1 star
davesolus

Simple, and does its job well.

Great little problem solver. My bass rig is four cable method between my SVT and Helix, and I have a hellacious ground loop problem as a result. This sits between the Helix and SVT's instrument input and eliminates the buzz altogether. I use the secondary pair of jacks to convert a balanced auxiliary signal to unbalanced so that the Helix can mix it with my DI signal to the PA. I bought it used, but I didn't have any worries since it's built like a tank. You could use it as a hammer if need be. Best $50 I ever spent.

Artist usage

Add artist
See how Ben Minal uses Radial Stagebug SB-6

Ben Minal

Drummer

Dorje

...
Verified via YouTube

Ben uses a radial di box live. he uses this to boost the signal from the focusrite and send it to the front of house

Genre Usage

Based on how artists on Equipboard use this gear, it is most commonly found in the following genres.

Used With

Based on how musicians on Equipboard use Radial Stagebug SB-6, it is most commonly used with the following gear.

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