Carpenter, in your attached schematic in post # 11, can't the input Mosfets be types with lower input capacitance than the IRF630s? What about BS170 and BS250? I forget which is N and which is P type but I remember using one of these in a Guitar preamp; when used for music input, it exhibited a very warm, tube like sound.
carpenter said:
In the meantime, if there's anything I can do for you... I'm a very good carpenter with a Sprinter van loaded with tools.
surprise him ;
make something exquisite like top part on your amp , and send ......
I know that I will , but I'm certainly hopeless with wood , comparing to you .
from Master to Master
For scaled down guitar amp triode+xformer (pp) outputs and "triode circuits" in general I've used a neat little feedback circuit with JFETs (2SK223 mostly), basic concept shown below. The output characteristic is pretty triode-like, and the basic sound as well. Don't know if it's good for HiFi, never tried (since it was deliberately designed to give specific distortion and overall sort of triode-like features).
- Klaus
- Klaus
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