Low Noise Transistors: ZTX851 versus ZTX689B Noise Performance

Where we discuss new analog design ideas for Pro Audio and modern spins on vintage ones.
User avatar
mediatechnology
Posts: 4195
Joined: Sat Aug 11, 2007 2:34 pm
Location: Oak Cliff, Texas
Contact:

Re: Low Noise Transistors: ZTX851 versus ZTX689B Noise Performance

Post by mediatechnology » Wed Nov 20, 2019 5:48 pm

Wow. My guestimate of 5.5 was pretty close.

The ZTX689 may be better overall as a mic preamp simply due to its higher gain (lower Ibias) and lower Cob.

Thank you Bill and Hans!
https://ka-electronics.com

"CDC Set Trap With Coronavirus Allowing a Month of Incubation" https://banned.video/watch?id=5e597d3934e11300790c4735
"Biggest Medical Scandal In History Breaking! UN Comes Clean, Admits Vaccine Death/Damage Coverup" https://banned.video/watch?id=5e1b9ed434b802001ed99b14
Mirror/Download: https://proaudiodesignforum.com/content ... overup.mp4
More: https://proaudiodesignforum.com/content ... People.mp4

Post Reply