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

RE: Alive and well.

I dialed the hum out today.
It's pretty easy to get ~6mV of hum by ear, I couldn't get much lower then 3.9mV - 4mV with the voltmeter using the low pass filter setting.

(I get an even lower result without the low pass filter, but it was more erratic, so I used the LPF to effectively find a null as it was more stable.)

They are effectively silent.

Obviously they sound a little better with the hum eliminated.

For shits and giggles I decided to separate the chassis, earth ground and electrostatic screens from audio ground. This introduced a bit of higher frequency hash, so I put it back to how it was.

Also worthy of note, regular 1A fuses have been working in my application, they are well behaved little amps.
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Edits: 01/15/15

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  • RE: Alive and well. - Garg0yle 16:42:29 01/15/15 (0)

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