by coop402 » Sat Feb 15, 2020 8:52 am
Thanks Thermiom,
I am going to check the numbers today.
Does Tube Cad have a way that you could share those simulations with me? I know it is incredibly useful as a tool,
but it would do me a great service to see how you created the simulation.
Turns out, I found out this is close to a Bottlehead Crack (I was told, if not the same thing). Looks like they bias a lot of their amps with that specific led.
I guess Dark Voice makes a chinese version with a 6sn7.
Either way to you point, it sounds great. I found the power supply schematic, super simple uf4007 rectifier, caps and resistors, no chokes.
I am pretty freaked out by how fast the music detail and transitions are. Maybe directly couple helps this. I just used a 150v Antek torodial transformer.
This is a super simple project to build, plus it sounds way above it price point.
Something interesting on the bottlehead site is that they sell a constant current (cascode, I guess) upgrade. That looks pretty cool.