Replacing the standard Decca 2-piece plastic mount with a ‘Decapod’ (solid aluminium) mount, is essential in my opinion and I recommend it.
The Decapod ‘mounting block’ is obviously a much more solid connection between the cartridge and the tonearm, than the original Decca design
And, I can advise that the Decapod will transform the sound of your ‘standard’ London Decca or Decca cartridge.
However, sometimes something visually or mechanically more impressive, does not always mean better sound.
The standard London Decca is ‘powerful’ sounding (with solid bass and ‘solid ‘imaging’), energetic and vivid, ‘exhilarating’.
However, the standard Decca cartridge is frequently a bit ‘edgy’ and ‘brittle’ and lacking some HF sparkle.
The London Decca with Decapod mount, is no less dynamically powerful and ‘fast’, with solid imaging – but everything else is much better ‘behaved’ or controlled.
The initial sonic impression is disappointment that some ‘edge-of’seat’ excitement has disappeared.
The London Decca now sounds more like a ‘normal’ cartridge, but the extraordinarily ‘solid’, ‘human’ and ‘real’ vocal imaging and tone is still there and everything still has the ‘power’, energy and ‘presence’ (that I’ve not experienced with other cartridges) – but without the previous feeling of ‘nervousness’.
HF tone and extension is also much better – not as ‘beautifully’ extended as a good MC cartridge, but this cartridge sounds like ‘reality’, whereas MC cartridges are capable of portraying a beautiful ‘impression’. Like a photograph compared to say an ‘Impressionist’ painting.
See also earlier post – LONDON DECCA cartridge – Pt 1