My is plugged into a regenerator by PS Audio. Probably going to try a few things there, never thought about my AC but I am pretty sure it coming from the pre...... but will try that for sure
Loud buzz / hum on my Aesthestix Calypso Preamp?
Help needed - Originally it was very soft and now it’s getting loud right from the get go on both channels from the speakers.
Changed tubes from Mullard to EH Gold pins and each time its turned on, the hum does not go away and the volume generally is much softer than normal probably by 5 to 10db give or take. Occasionally its present only at the beginning of start up, probably 2 minutes and it slowly goes away completely. Placed the original Mullard tubes back and the hum is still there. Power amp is via ARC VS110 unbalanced. Its still present, loud enough to frustrate! Did anyone have issues with EH tubes with their Calypso preamp?
Any suggestions?
Changed tubes from Mullard to EH Gold pins and each time its turned on, the hum does not go away and the volume generally is much softer than normal probably by 5 to 10db give or take. Occasionally its present only at the beginning of start up, probably 2 minutes and it slowly goes away completely. Placed the original Mullard tubes back and the hum is still there. Power amp is via ARC VS110 unbalanced. Its still present, loud enough to frustrate! Did anyone have issues with EH tubes with their Calypso preamp?
Any suggestions?