LONDON Decca, Tzar DST and similar cartridges

@howardalex Thank you. I had a Radford ST50 long time ago with MO KT88s. Sweet and powerful with 3D imaging. But the big caps dried out and I let it go. My modified EICOs stun me every day with their control, detail, color and lifelike sound on the ESLs.

This is for you Bydlo....to keep you going till your LDR arrives 😃
I run mine at the recommended 1.8Gm (2/3 Static Force, 1/3 Dynamic) with a modicum of Antiskate 🤏

This shows the versatility of the LDR to 'rock' despite the often disruptive interference of Phil Spector....

LONDON DECCA REFERENCE

@halcro - hi, I’m just trying my LDR at 1.65gm with minimum bias on FR66s. I tried it last night and it was very nice at that setting , will have another go later...
I asked John Wright what the VTF should be and he said “1.8gm +/- 0.2gm” so I guess the recommended range is 1.6-2.0 gm.

@howardalex, a while ago there was some talk on this forum about 'special' FR7's with unbelievable specs. Very rare and perhaps aimed at the professional market, as you suggest. In any case, it appears you are in possession of something truly special! 
The FZ version is usually quoted as the best of the regular models, but I have come to prefer the MC 702. Another peculiar and rare one, apparently the last of the FR7's and supposedly aimed at the European market. Whatever the case may be, it is exquisite.

I’ve now listened to the LDR at 1.65 gms and on some of my (admittedly quite worn) 1960s Argo recordings there was some mistracking, so I’ve increased to 1.85 gm which seems to banish that