Amateur with Tube Amplifier

[Alllensoncanon]

NFB is like a magical cleaner. It reduce distortions, improve impedance and expand bandwidth. Like any cleaner, no matter how magical it is, you don't want to put too much of that stuff on your fancy furniture. It might clean up all that tube magic too.

 

[vuhothang]

Thanks, try to have good sound for me.

Next plan is EL34 Single-End.

 

[vuhothang]

Thanks to all. This is my amplifier

An externally hosted image should be here but it was not working when we last tested it.

An externally hosted image should be here but it was not working when we last tested it.

Test with 6H9C, 6H12C, 6N3C-E YouTube

 

[DAK808]

You can try a variable resistor

I will try with 47K, 100K, 200K feedback resistor. will low FB effect open wide rang freq or what?

There are variable resistors with screw adjustments that can cover the resistance range you are looking at. For most PP amps , depending on the quality of the output transformer, you will seldom see the FB resistor of more than 33K ohm. If you are considering using a pot , don't use analog type, get a linear pot.

 

[Alllensoncanon]

Need a little color as high light😀 Too many all black amp.

 

[vuhothang]

I will try with variable resistor to have better sound for me.
All black is my favorite color, strong.
Thanks to all.