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Single Ended Triodes (SETs), the ultimate tube lovers dream.

Look at the grounding!

I love the way he routes the AC power ground, and the b+ filter ground, the yellow wires, right back through the input circuit and tube! Those have to be the two nosiest wire in any amp. Why not run them around the back side where there is far less change causing of EMI.

Poor engineering practice in my book.

Ahh, but wait. Dennis did claim in a past post that a little amount of hum is good. Something along the lines that it per-energizes the speaker so it can respond faster. This must be how he gets just the right amount of hum into the signal path.



Edits: 11/17/14

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