UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post

barrymagrec · 18th Feb 2019, 7:27 pm

Marconi Z77s were used in the record / replay amplifier of the EMI TR50 and TR51 tape machines - I never tried the blue Mullard EF91s to see if they were better though...

18th Feb 2019, 7:27 pm	#76
barrymagrec Octode Join Date: Dec 2017 Location: Morden, Surrey, UK. Posts: 1,557	Re: "Audio" Valves Marconi Z77s were used in the record / replay amplifier of the EMI TR50 and TR51 tape machines - I never tried the blue Mullard EF91s to see if they were better though...