Anyone interested in a 500 series tube preamp?

[Monksound]

I’ve had plans to make a tube preamp project for 500 series lunchboxes for some time now using a Manley mic transformer and a high MU duel triode tube. Now that I’ve solved the power supply problem I’m ready to gauge interest. This is still a project in the early stages but the project is based off of a known working circuit heavily modded by myself to fit it into the 500 series format.

 

[ruffrecords]

Is it 100% tube or are there semiconductors in the signal path?

Cheers

Ian

 

[Ilya]

What was your PSU problem solution?

 

[boji]

Estimated pricing would help, thx

 

[Clbraddock]

What kind of plate voltage are you thinking? High plate voltage 500 series would be interesting.