Can't find what you are looking for? Call our sales team on +44 (0)161 223 2200

Featured Products

Tentacle Sync

Timecode Sync E Single


Comm-Biner Audio Interface


CORE 6000 Series

Audio Ltd

A20-RX SpectaBand

Aaton Digital

A-box 8 Rotary Faders

Featured Brand

Why Choose WBS?

I just wanted to put in writting my appreciation for everything your company has done for me recently. The replacement for my 664 mixer arrived today and is working perfectly. Please pass on my thanks to Matt for his patience, expert help and the guidance he has provided despite me phoning, in a panic, from various locations around the world.  Thanks to you all for going beyond the call of duty, the level of service has been absolutely fantastic! 

Simon Forrester

Freelance Sound Recordist

Audio Ltd

A-FILTER-R PC Board for Cable Techniques


Audio Ltd RF Immunity XLR Circuit Board for Cable Techniques

24.00 ex vat 28.80 inc vat


More than 10 in stock

If you require a quantity greater than our current stock level, the estimated delivery for the remainder of your order will be 2 - 3 Working Days

Audio Ltd A-Filter

The A-Filter is an accessory PC board that reduces RF interference by -40Db when soldered onto the female end of a straight XLR cable. It is designed for use with older shotgun microphones that have less built-in RF resistance.

  • Requires soldering onto the female end of a straight XLR cable
  • For use with balanced microphones specifically when connected to digital wireless transmitters like the A10-TX
  • Reduces unwanted RF signals by -40dB

Please note: This may not be compatible with some low profile XLR Connectors.


Click here for installation instructions

Sign up for our newsletter

Wendys Broadcast Services LTD, Unit 2 Medlock Court, The City Works, Manchester, M11 2NB Registered in England 21020497 Vat No GB 850 1613 57

web site by Steve Boyle