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Stephen van 't Hof
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Firefly tubeamp for guitars

The Firefly tube-based amplifier for electric guitars is entirely built by me. It is an 1,5 watt amplifier with a nice overdrive. There is an additional boost option for extra overdrive. The circuit design is by Doug Hammond and the circuit board design is by John Calhoun. However, I did some minor modifications to the circuit, assembled the parts and built it by myself. The cabinet is entirely designed en built by me. For the furry look, I used carpet. The sound is very clear.

Over the years I have also built guitar effects. For example the Flowerbooster, shown on the bottom left corner of the picture. The circuit designs float around on the internet, I simply apply them. The painting is designed and done by me. These effects have been used on live concerts and EP recordings.


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