Castledine Electronics Grey Wah


Stuart Castledine Electronics

This is a replica of the Vox wahs made in England by Jennings Musical Industries (JMI) during 1967-68. These had a very distinctive sound, with a higher sweep range than the Italian-made wahs. Original examples are relatively scarce and command prices in excess of £1000. My replicas are as close as you will get and are based on careful study of several original Jennings Vox wahs. The circuit (pictured below) is built in exactly the same way as the original, using a custom made board.


  • Reproduction inductor - hand wound and individually fine-tuned
  • Exact replica of the original circuit.
  • Transistors selected for gain and low noise
  • True bypass switching

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