Yesterday I listened to a Youtube of 2019 BAF where Linear Audio was presenting and Nelson commented that he wanted to redux The Beast and would appreciate lower cost JFETs that did not require lowest noise figure.
Has there been any discussion about possible configurations of The Beast using parts that can be acquired from Digikey or Mouser?
I have been thinking of possible parts to use and running parts through the curve tracer. More parts on order to also run through the curve tracer.
A possible proof of concept would be a 200mA bias version for a headphone amp.
The JFETs will like have to be SOT23 package. I have an initial favorite for both N and P. I will post measurements when I have all the measurements finished.
My thinking is to cascode the JFETs using the hockey pucks from the F4 Beast. This will allow using higher Idss JFETs and operating the JFETs at ~3V Vds and also operating the JFETs un-degenerated. Most of the heat winds up in the pucks.
The voltage rails can be normal First Watt rails if desired.
Just getting started with possibilities.
Has there been any discussion about possible configurations of The Beast using parts that can be acquired from Digikey or Mouser?
I have been thinking of possible parts to use and running parts through the curve tracer. More parts on order to also run through the curve tracer.
A possible proof of concept would be a 200mA bias version for a headphone amp.
The JFETs will like have to be SOT23 package. I have an initial favorite for both N and P. I will post measurements when I have all the measurements finished.
My thinking is to cascode the JFETs using the hockey pucks from the F4 Beast. This will allow using higher Idss JFETs and operating the JFETs at ~3V Vds and also operating the JFETs un-degenerated. Most of the heat winds up in the pucks.
The voltage rails can be normal First Watt rails if desired.
Just getting started with possibilities.