Kendoji
100+ Head-Fier
- Joined
- Jun 5, 2012
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I actually just found an old 'hum troubleshooting' document on the Decware site where Steve recommends removing each tube, one at a time, and turning the amp on to check for hum. I just did this without problems, but unfortunately the hum was still there without tubes. So it's really something to do with the amplifier.