it didnt cause any problems last night, but the man who built it
said "it might" when running through unstable voltage.
when the bias is cold, say 20-25mV for kt66, i can hear that
its a bit thin sounding, considering i am using jtm45 who has
this woofy bass sound because of the big cap 220uf V1 cathode.
then he told me to check the wall voltage, and saw that it was unstable.
fluctuating between 223v to 230v. causing the bias to go
25-27mV. i have set the bias to 35-40mV here in my
house, which the wall voltage is a solid
235v reading.
so i think i might need a voltage regulator, that i dont know
much about.