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AKG B48L Battery-Operated Phantom Power Supply

  • Product Highlights
  • Provides 48V Phantom Power
  • Ultra Low Noise Floor
  • Low Battery Monitoring
  • Phantom Power Monitoring
  • XLR and Mini-XLR Audio Output
No Longer Available
This item has either been discontinued by the manufacturer or is no longer available to purchase on our website.

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(800) 771-8330
  • Product Highlights
  • Provides 48V Phantom Power
  • Ultra Low Noise Floor
  • Low Battery Monitoring
  • Phantom Power Monitoring
  • XLR and Mini-XLR Audio Output

Battery-Operated Phantom Power Supply for Condenser Microphones


The B48 L is a battery-operated power supply for condenser microphones for applications when a condenser microphone is used but no phantom power from a mixer is available. The additional mini-XLR audio output and the included mini-XLR to mini-XLR connection cable support a direct connection to all AKG body-pack transmitters. The phantom power of the audio input supplies microphones with 48V and meet the P48 standard.

The B48 L is a battery powered one channel phantom power supply for P48 condenser microphones. B48 L is designed to meet the demand of lowest noise level even in operation with high-end condenser microphones for professional applications in theater or touring applications.


  • Ultra low noise floor
  • Supports P48 microphones - 48V / 10mA (max.)
  • Two AA-size batteries support (mic-load-dependent) 10 to 100 hrs operation
  • Low battery and phantom power monitoring
  • XLR and mini-XLR audio output for connection to a recorder or wireless body pack transmitter
  • Mini-XLR (f) - Mini-XLR (f) cable included


  • Audio frequency range: 20 - 24 000 Hz
  • Gain: 0 dB
  • Finish: black
  • Audio input connector: 1x XLR 3-pin (f) audio input (48V/10mA)
  • Audio output connectors:
    1x XLR 3-pin (m) audio output
    1x mini-XLR (m) audio output for direct connection to AKG wireless body-pack transmitter
  • Power LED: Monitoring of P48 microphone power
    Green: Phantom power >42V
    Dark: Phantom power <42V
  • Low battery LED: Monitoring of battery power
    LR6, FR6 batteries: Operation time below 1 hour
    HR6 rechargeable batteries: Operation time below 2 hours
  • Battery: 2x AA size batteries (LR6, HR6, FR6), built in inverse-polarity protection
  • Noise level: < 2μV
  • Operating temperature: -10 to 50 °C (14 to 122 °F)
  • Dimensions: 123x65x28.5 mm (4.84x2.56x1.12 in.)
  • Net weight: 120 g (0.26 lbs)
  • Item Number: 3163Z00010


Q & A

B48 L
MFR Part Number
Product Category
Phantom Power Supplies
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