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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?
vusi_khumalo

Showing 2 responses by sbank

sbank's avatar
sbank
3,378 posts
 
Sure it's great that Brooks Berdan adjusted the setup after a cart's suspension is broken-in, but isn't that different than what VDH does and actually opening up the cart and adjusting the suspension, rechecking channel balance etc. inside the cartridge itself? 
I also have owned a number of VDHs, agree with OPs observation that the adjustment or "tuneup" does improve the sound and was curious about other cartridge manufacturer's viewpoint(i.e. why it's not their practice) on that idea.Cheers,
Spencer
sbank's avatar
sbank
3,378 posts
 
@testpilot My understanding as heard from VDH dealers is that it isn't about QC, it's about how the stylus wear in the first 300 hours upon inspection let's VDH see how to adjust the suspension to make sure that on the table that's being used the cartridge will perform as close as possible to its design. Maybe VDH stylus vs. other shapes is part of the reason why they do it and others don't? Your last suggestion could just as easily be the reason...maybe someone else can tell us both. Cheers,
Spencer
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