Two new amps: Pass F5 and GR-25

[luvdunhill]

a couple cool projects have popped up recently, one by Papa himself and one by John Curl's number one fan, Grey:

http://www.diyaudio.com/forums/showthread.php?s=&threadid=120673

http://www.diyaudio.com/forums/showthread.php?postid=1484933#post1484933

Just figured someone around here might be interested!

[luvdunhill]

a couple cool projects have popped up recently, one by Papa himself and one by John Curl's number one fan, Grey:

http://www.diyaudio.com/forums/showthread.php?s=&threadid=120673

http://www.diyaudio.com/forums/showthread.php?postid=1484933#post1484933

Just figured someone around here might be interested!

I think this would make a snazzy preamp myself, perhaps using the 2sk389/2sj109 as input jfets instead, er and remove the 500 ohm resistors....

[img width=121 height=150 alt=GRFE]http://www.head-case.org/gallery2/main.php?g2_view=core.DownloadItem&g2_itemId=2349&g2_serialNumber=2&g2_GALLERYSID=07294709821172ddd05f5fcbe96431fa

[fierce_freak]

Cool, thanks for the heads up!

[luvdunhill]

another interesting preamp design:

Detailed write-up at:

The Difference Engine Preamp Version 1.0 Exploring a 'secret' circuit called a differential. Article By Grey Rollins