Radial SB-6

2-channel compact passive isolator

Our price:$215.00 GST
Order Code: SB-6

3 in stock (can be backordered)

Stage Bug SB-6 has the same design and function attitude as the rest of the Radial Stage Bug range – including the essential (non-negotiable) elements for a squeaky clean signal path, and gets it all crammed into a super-compact housing, so there’s no excuse for traveling to a gig without one.

Small enough to stick in and around your guitar pedal board or traveling DJ rig, SB-6 is a passive, 2-channel audio isolator to help eliminate hum or buzz from your system.

Dual ¼” TRS inputs and outputs accommodate both TRS and mono type connectors. The unique circuit retains the balanced signals or automatically converts them from hi-Z to lo-Z (¼” mono to TRS) or lo-Z to hi-Z (1/4″TRS to mono) depending on the connector in use.

…more below…


  • 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

Check the entire Radial Stage Bug range here.

Inside are two ultra-linear Eclipse transformers that sound great as they deliver ruler flat performance from 20Hz to 20kHz. This is augmented with a -10dB input pad to handle extra loud source devices and a polarity reverse on output B for phase aligning stereo signals. As the circuit is passive, no power is required – simply plug in and play. As with all Radial products, the SB-6 is made in Canada and features 16 gauge steel construction for use on the road and finished in a durable powder coat finish.

These features combine to make the SB-6 Isolator a wonderful solution to help rid system noise in two channel audio systems, stereo guitar racks and pedalboards.


Audio circuit type:  Passive Transformers
Frequency response:  20Hz-20KHz +/-1db
Dynamic range:  >140db  
Maximum input:  >+25dBu
Gain: -2dB
Total harmonic distortion:  <0.0008% @ 1kHz
Phase deviation:  >5° @ 30Hz
Input impedance:  Varies with Load/47K
Output impedance:  600Ω


Transformer: Eclipse Custom
Input pad:  -15dB  
Polarity: 180deg reverse
Ground lift:  Disconnects TRS sleeve at output
Input connector: 1/4″ TRS phone
Output connectors: 1/4″ TRS phone


Construction:  14 gauge steel chassis & outer shell
Finish: Durable powder coat
Size: (L x W x D) 114mm x 47mm x 34mm
Weight:  408 grams
Power:  Passive, no power required 
Conditions: For use in dry locations only between 5°C and 40°C