B1 rev.2 complementary FET, as discussed here :
https://www.diyaudio.com/community/threads/b1-rev-2.301812/
Board is designed by member Mikerodrig27, as posted here in the thread:
https://www.diyaudio.com/community/threads/b1-rev-2.301812/page-20#post-7266237
Resistors are Vishay CT55, Dale CMF60, Dale RN60 in the critical position. 2SK170/2SJ74 matched (to 0.1mA) quad IDSS value 8.3mA, from the highly recommended punkydawg ( eBay seller). Trimmed to a rock steady 0.00V dc on my Fluke multimeter on 300mV range.
58 USD (shipping included, registered + tracking). Shipping from Singapore
https://www.diyaudio.com/community/threads/b1-rev-2.301812/
Board is designed by member Mikerodrig27, as posted here in the thread:
https://www.diyaudio.com/community/threads/b1-rev-2.301812/page-20#post-7266237
Resistors are Vishay CT55, Dale CMF60, Dale RN60 in the critical position. 2SK170/2SJ74 matched (to 0.1mA) quad IDSS value 8.3mA, from the highly recommended punkydawg ( eBay seller). Trimmed to a rock steady 0.00V dc on my Fluke multimeter on 300mV range.
58 USD (shipping included, registered + tracking). Shipping from Singapore