Perahps, there is better QC with modern cartridges which negates the need for a follow up tune-up, or there is not enough cartridge artisans within the manufacture to perform a follow up tune-up.
How come only 1 or 2 cartridge makers offer a tune-up after run in?
I've had interest in super low output MC cartridges from Benz (TR-S) and ZYX (Ultimate Dynamic) but wonder why they don't offer a free tune-up service like VdH do? I've had a custom 0.18mV Colibri XCP for 2 years and it did sound better after the tune-up at 300hrs (as did the previous Colibris). Any comments on whether all carts carts would benefit from a tune-up after run in?