Radial Engineering SB-48 UB Phantom Power Supply
Price RM910.00
Brand Radial Engineering
Size (L x W x H) 17 cm x 11 cm x 8 cm
Availability In Stock

Radial SB-48 UB Phantom Power Supply Overview

The Radial StageBug SB-48 UB is a unique phantom power supply that enables a guitar, bass or mandolin player to connect a condenser microphone to a wide variety of devices, including stage amplifiers and effect pedals. Power is derived from a 15V DC power supply, and an internal non-radiating charge pump elevates the voltage to 48V for standard phantom power use. It can also be easily switched to a 12V output for versatile phantom power options. The unique advantage of the SB-48 UB is the inclusion of both balanced and unbalanced outputs in its design, allowing you to connect to multiple different devices with matched impedance and levels. Both of the outputs can be used simultaneously.


  • Unbalanced 1/4'' 'guitar-level' output used to feed a stage amp of guitar effects pedal using standard coaxial cable
  • XLR-M output for connecting the mic signal to a mixing console or preamp
  • XLR-M output is equipped with a capacitor to block other sources of phantom power, preventing damage to your microphone or direct box
  • XLR-F input for connecting your microphone to the SB-48 UB
  • Phantom power is generated inside the SB-48 UB and is injected into the mic capsule via the XLR-F connectors and mic cable
  • +12/48V switch for toggling between standard +48V, and +12V for specialist microphones
  • Power jack accepts the included 15V DC/400mA power adapter
  • Power LED that illuminated when the PSU is connected and the SB-48 UB is active
  • Cable clamp that is used to lock down the PSU cable to prevent accidental disconnection
  • No-slip pad across the full bottom face of the SB-48 UB that keeps the unit in one place with plenty of friction


  • Circuit Type: Non-radiating phantom power supply
  • Number of Channels: Single channel for one microphone
  • XLR Connector: Lo-Z balanced microphone level output (AES standard, pin 1 = ground, pin 2 = hot (+), pin 3 = cold (-) )
  • 1/4'' Connector: Hi-Z unbalanced instrument level output (tip = hot, sleeve = ground)
  • Phantom Output: Switchable +48 / +12 volts DC
  • Power Supply: 15V DC / 400mA external supply (included)