For those awaiting the boards delivery, your packages may be tracked here:
https://parcelsapp.com/en/tracking/
use the tracking number (RR................CZ) that I sent everyone in the PM last week.
https://parcelsapp.com/en/tracking/
use the tracking number (RR................CZ) that I sent everyone in the PM last week.
I got the inputs and headphone jack wired up last night... I played a few tracks through my computers headphone output, tonight I will hook it up to my dac and see what she can really do. So far, she sounded great!
I am going to leave the 5K6 resistors in for the 30mA idle current for now. I added the small addition heat sinks as those little black ones got pretty hot without at that current. Now you can leave your finger on them indefinitely, still hot but hopefully nothing to worry about long term.
I am going to leave the 5K6 resistors in for the 30mA idle current for now. I added the small addition heat sinks as those little black ones got pretty hot without at that current. Now you can leave your finger on them indefinitely, still hot but hopefully nothing to worry about long term.
Even the small heatsinks make reliable operation - I have a prototype here that has been safely operating for 15 years. Yes hot, but still within transistor specs.
Did someone recently ordered parts for this preamp from either Mouser or Digikey, if yes can you please share the BOM cart for my reference.
thanks
thanks
This is a 30kHz clipping scope screenshot, to show excellent overload behaviour of this topology and no phase reversal.
