Detail 01
Passive transformer circuit
Operates without a power connection.
Product detailSKU #1500000285105
Radial EngineeringStageBug SB-6 Passive Stereo Line Isolator
1/3
Independent shopping perspective
The Korena take
StageBug SB-6 is a passive two-channel isolator for cleaning up stereo guitar racks, pedalboards, and other dual-channel audio paths. Its two transformers address hum and buzz from ground loops while covering 20Hz–20kHz. Dual ground lifts provide additional noise-reduction options, and the -15dB pad accommodates high-level outputs. When feeding powered speakers or guitar amplifiers, the polarity-reverse switch can correct cancellation caused by speakers operating out of phase. It inserts with 1/4-inch TRS connections and needs no power.
Strong match
Who this is for
- Removing ground-loop hum and buzz from stereo pedalboards or two-channel guitar-rack signal paths.
- Inserting isolation before powered speakers or guitar amplifiers when speaker polarity needs correction.
What matters in use
The specifications, translated
Catalog numbers tell only part of the story. These are the details most likely to change how this product feels, sounds, or fits into a setup.
Detail 02
-15dB pad
Lets the unit accept high-volume outputs without distortion.
Detail 03
Dual ground-lift switches
Provides separate ground-lift control for the two channels.
Final check
Know before you order
- 01Use it only in dry locations between 5°C and 40°C.
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01Does the SB-6 need power?
No. It is fully passive and requires no power.
02What connections does it use?
It has 1/4-inch TRS inputs and 1/4-inch TRS outputs.
03Can it help with speakers that are out of phase?
Yes. Its polarity-reverse switch is intended to correct cancellation when used ahead of powered speakers or guitar amplifiers.
Reference
Full specifications
The complete catalog record, organized around the decisions musicians make when comparing gear.
2 detailsSound
- Frequency Response
- 20Hz-20KHz +/-1db
- Power
- Passive, no power required
1 detailsPickups & controls
- Audio Circuit Type
- Passive Transformers
1 detailsBody & build
- Construction
- 14 gauge steel chassis & outer shell
5 detailsConnections & power
- Input Impedance
- Varies with Load/47K
- Output Impedance
- 600Ω
- Output Connectors
- 1/4 inch TRS
- Maximum Input
- >+25dBu
- Input Connectors
- 1/4 inch TRS
2 detailsSize & weight
- Weight
- 0.9
- Shipping Weight
- 1.0 lb. (453 grams)
8 detailsOther
- Transformer
- Eclipse Custom
- Size L X W X D
- 3.92 inch x 2.54 inch x 1.7 inch (100mm x 65mm x 43mm)
- Dynamic Range
- >140db
- Gain
- -2dB
- Phase Deviation
- >5° @ 30Hz
- Shipping Size L X W X D
- 8 inch x 5 inch x 3 inch (203mm x 127mm x 76mm)
- Conditions
- For use in dry locations only between 5°C and 40°C
- Total Harmonic Distortion
- <0.0008% @ 1kHz
