Sennheiser AB 4-BW

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BrandMore from Sennheiser
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Product details

The AB 4 is a filtering, integrated antenna amplifier with BNC connectors. It amplifies the incoming signal by typically 12 dB, thus preventing signal loss over long cables.

The AB 4 is fully compatible with all evolution wireless systems. Additionally, the filters of the AB 4 have been extended to frequencies up to 88 MHz.

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Reviews & Ratings

Warranty score

How often does a product of this brand in the «Stereo amplifiers» category have a defect within the first 24 months?

Source: Digitec Galaxus
  • Sennheiser
    Not enough data
  • 1.Giecy
    0.6 %
  • 2.WiiM
    0.8 %
  • 3.Denon
    1.5 %
  • 4.Fosi Audio
    1.6 %

Warranty case duration

How many working days on average does it take to process a warranty claim from when it arrives at the service centre until it’s back with the customer?

Source: Digitec Galaxus
  • Sennheiser
    Not enough data
  • 1.Yamaha
    2 days
  • 2.Power Dynamics
    3 days
  • 3.Fosi Audio
    7 days
  • 3.WiiM
    7 days

Return rate

How often is a product of this brand in the «Stereo amplifiers» category returned?

Source: Digitec Galaxus
  • Sennheiser
    Not enough data
  • 1.Denon
    2.5 %
  • 2.WiiM
    4.6 %
  • 3.Fosi Audio
    4.7 %
  • 3.Yamaha
    4.7 %
Source: Digitec Galaxus