A abbey road d enfer Well-known member Staff member GDIY Supporter Moderator Joined Jan 22, 2008 Messages 17,719 Location Marcelland Jan 19, 2023 #21 dmp said: I wonder if using a differential receiver chip would be preferable to the tiny unshielded input Tx that is picking up hum? Click to expand... These differential receiver chips are not optimized for mic level, too noisy. dmp said: Also for a barebones preamp I don't think the 16 overvoltage protection diodes on the output are necessary? Click to expand... Certainly not necessary, but they offer extremely cheap protection for these expensive chips.
dmp said: I wonder if using a differential receiver chip would be preferable to the tiny unshielded input Tx that is picking up hum? Click to expand... These differential receiver chips are not optimized for mic level, too noisy. dmp said: Also for a barebones preamp I don't think the 16 overvoltage protection diodes on the output are necessary? Click to expand... Certainly not necessary, but they offer extremely cheap protection for these expensive chips.
