Langevin 251

[BluegrassDan]

Has anyone done a DIY Langevin 251/251a? Working on a two channel tube preamp and integrating a couple 251s would be awesome.

I've seen the schematic. Anyone done a layout?

 

[emrr]

That'll be a challenge.  Easily as expensive as real ones. 

 

[BluegrassDan]

Knowing nothing about them, which component(s) are cost prohibitive?

 

[emrr]

The two 4 deck 15 position MBB switches won't be cheap, nor the custom inductors which in particular have to be exactly right in all properties to mimic the sound.