Studer B67 butterfly head replacement - UK Vintage Radio Repair and Restoration Discussion Forum

jascha · 9th Dec 2022, 12:46 pm

Hi everyone,

I have just restored a B67 that has been added to my collection however I am not sure what to do regarding heads as this was a BBC model that came fitted with a bitterly record head and a parallel track replay head.
I wish to replace the PB head with a butterfly and have a few of them as spares that fit an A807. The question is whether an A807 head would fit a B67, I don’t mean physically but electronically speaking as I believe that B67 uses MuMetal heads and A807 uses vitrovac heads. In other words can I use vitrovac heads on a B67 without having issues with inductances and performance issues?

Many thanks

9th Dec 2022, 12:46 pm	#1
jascha Hexode Join Date: Nov 2005 Location: Kent, UK. Posts: 332	Studer B67 butterfly head replacement Hi everyone, I have just restored a B67 that has been added to my collection however I am not sure what to do regarding heads as this was a BBC model that came fitted with a bitterly record head and a parallel track replay head. I wish to replace the PB head with a butterfly and have a few of them as spares that fit an A807. The question is whether an A807 head would fit a B67, I don’t mean physically but electronically speaking as I believe that B67 uses MuMetal heads and A807 uses vitrovac heads. In other words can I use vitrovac heads on a B67 without having issues with inductances and performance issues? Many thanks