• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

Phono cathode follower challenge!!

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Slightly off topic, I know, but have you dared take the body off the Ortofon? I used to have one of those and really liked it - but it sounded even better with the body removed and a tight-fitting wedge of balsa wood pushed between the magnet and base plate. It's a terrible photograph, I know, but you should just about be able to see the white of the balsa underneath the white of the photographic flare.

No I haven't dared!!
I'm a little scared of it TBH because I'm not sure what to do when it needs a new tip, although I think Van de Hul may do them..

... but I will have to take it off when I rewire the arm, probably with mini-headphone cable and a proper earthing system - my RB300 only has a feeble original wire with the LH shielding as ground.

When it's off I'll have a look!

Going to check out pentode phono amps now - thanks for the links, it would be nice to stick to all tube if possible, although I do have 23 Mullard and Brimar ECC88s that I want to do something with.

Incidentally I also had a couple of Mullard shield 12AX7/ECC83 (BVA) tubes so I swapped (in the Sheer preamp) out the Tung-Sol ones for the Mullards, and I have to say the Mullards do really sound rather good, the whole sound is a little freer and less constricted.
 
There are two screws, one each side of the body, after that, it's just a case of easing it off gently without catching the delicate sticky-out bit at the front. I was as nervous as you and applied exactly the same logic. But once I'd done it to a worn cartridge and heard the difference, I did it a lot faster to a new one.
 
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