Menu × Recording Live Sound Microphones DJ Lighting Installation Video Accessories Brands Specials
My Account Track Order Contact Us Services Events Blog Newsletter Apps

Toll Free: (800) 771-8330

AKG B29L Phantom Power Supply and Mini-Mixer

  • Product Highlights
  • Power Supply and Mixer
  • Mic and Line Output
  • Compact Rugged Design
  • Extended Battery Life
No Longer Available
This item has either been discontinued by the manufacturer or is no longer available to purchase on our website.

Suggested replacement

Please Contact Us for more information.

(800) 771-8330
  • Product Highlights
  • Power Supply and Mixer
  • Mic and Line Output
  • Compact Rugged Design
  • Extended Battery Life

Battery Operated Phantom Power Supply and Mixer for One or Two Microphones


The AKG B29L is a compact portable mixer and power supply designed to accommodate 2 compatible AKG Series III, L-version lavalier microphones featuring a TA3F connection. Compatible microphones include the C418, C419, C420 and more. The power supply operates up to 50 hours on a single 9-Volt battery and features a single XLR output capable of mic or line level signal. Volume adjust dials are conveniently located on the sides for quick access. The compact, rugged construction is designed to withstand vigorous use and a belt-clip provides easy mounting to camera straps, utility belts, harnesses etc.


  • Power Supply and Mixer
    The AKG B29L provides phantom power to 2 AKG Series III condenser microphones featuring a TA3F connection. In addition to providing power, the unit also operates as a mini mixer with volume control for each input.
  • Mic and Line Output
    The single XLR output is capable of providing Microphone or Line level signal.
  • Compact Rugged Design
    The lightweight, rugged construction is made to withstand heavy road use, the attached belt-clip conveniently allows mounting to camera straps, harnesses, etc.
  • Extended Battery Life
    The unit operates on a single 9-Volt alkaline battery and provides power for up to 50 hours.


  • Power Supply: 9-Volt Alkaline Battery
  • Current Consumption: max. 10 mA
  • Battery Life: Approximately 50 hours
  • Input Channels: 2 - Mini XLR-F
  • Maximum Input Level: 0 dBV
  • Input Impedance: 5 k ohm
  • Input Attenuator: -50 dB
  • Output: XLR-M phantom power protected (max. 55 VDC)
  • Maximum Output Level: 0 dBV +/- 1dB @ k < 1% and Ubat = 9 V
  • Output Jitter: typ. 200 ohm unbalanced
  • Gain:
    Mic: 0dB +/- 1dB
    Line: 40dB +/- 2dB
  • Noise: < 8 uV (A)
  • Frequency Response: 20Hz to 20kHz
  • Temperature Range: -32 degrees F to 140 degrees F (0 degrees C to 60 degrees C)
  • Humidity: 93% @ 140 degrees F (40 degrees C)
  • Dimensions: 3.7 x 2.6 x 1.1" (94 x 67 x 27mm) W x D x H
  • Weight: 4.8 oz. (135g)

Q & A

MFR Part Number
Product Category
Phantom Power Supplies
Unit of Measure
Shipping Weight
0.26 lbs.
Page Views
Previous AKG product
Next AKG product
Connect with Performance Audio
Sign up for our newsletter.
Click here to see our current newsletter >
Why Choose Performance Audio?
Light Bulb

40+ Years in the Business

Performance Audio isn't new to Pro Audio & Video. We have been servicing the needs of professionals for over 40 years! We have the expertise to help you get the job done right. The first time.


Real World Convenience

Performance Audio has built lasting relationships with the brands you love! We have decades of experience working with our suppliers. We are equipped to get you what you need, when you need it. When you need it.


Staff with Know-How

Performance Audio has long believed that experience and knowledge are vital to building relationships with our customers. We focus on getting, and keeping, a staff who know and love the Pro Audio & Video world. People like you.


Prices That Don't Suck

Performance Audio is one of the largest suppliers of professional audio & video gear in the Mountain West. We have one of the largest inventories in the industry. That means we can save you money! The right price.


Specials Shop by Brand Manufacturer Directory Request a Quote Get our iOS Apps
McAfee SECURE sites help keep you safe from identity theft, credit card fraud, spyware, spam, viruses and online scams
Performance Audio LLC BBB Business Review

Performance Audio Coupons on Ultimate Coupons
Performance Audio Apps on the iTunes App Store, Audio Tool, Decibel Meter Pro, Tone Generator Pro

© 2018 Performance Audio, LLC. All rights reserved.

All brand, company or product names contained may be trademarks or registered trademarks of their respective owners. Prices, specifications, and images are subject to change without notice. Not responsible for typographical or illustrative errors. All prices listed are in US dollars and do not include shipping and/or sales tax, when applicable.