Zu Audio Modded Denon 103's


I bought a Zu Audio DL 103 Mk II cartridge - Grade 2 Prime cartridge for $1099 as a spare as my other cartridge was being repaired/inspected. At the time (September 2020), the cartridge sounded pretty good - this was my first modded DL 103. However, just as the cartridge was breaking in (~ 35 hours), I accidently hit my tonearm and sent it towards the platter and unfortunately snapped the cantilever right off. After a few cuss words, I realized there wasn't much I could do except send it in for a retip. So the next day, I sent it to VAS Audio to get it retipped. When Steve examined the cartridge, he told me that the right terminal of the cartridge was damaged internally and that due to the make of the cartridge (epoxy filled) that repairing it would be an issue. I then reached out to Zu Audio who confirmed that repair was not possible (after I sent the cartridge back to them) and the best they could do was offer me 20% off on a new cartridge. I definitely wasn't going to go down that route again - I tried to get the 20% discount on other Zu products, but was told that the offer was only good for cartridges. So, worst $1100 ever spent. I know accidents like this are isolated incidents, but it does happen. So those of you that are looking into the Zu modded Denon's - keep this in mind.


Since I didn't have another spare cartridge, Steve did send me one of his modded Denon's with a wooden body and elliptical stylus. The VAS cartridge sounded warmer and better than the Zu cartridge and at half the price. To those that are in the market for modded 103's there are tons of options out there - I would recommend giving VAS audio a try before pursuing the more expensive Zu Audio or other cartridges that use epoxy as fillers to add mass. This way if something goes wrong, at least there is the option to repair the cartridge.

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Showing 5 responses by rdk777

@chakster -  I think you misunderstood my post.  The fact that it was epoxy filled, it could not be fixed.  If the wires on a regular cartridge get damaged internally, it can be fixed - at least that's what I was told. Usually a broken cantilever/stylus can be retipped, but in this case, it would be hard to do - even Zu said so.  I realize that its my fault and no one owes me anything, but I just wanted to point out a potential design flaw. I also think you make Zu to be more than they are similar to your vintage cartridges that no one else can find but you. 
Thanks @solypsa.  Good to know.  I'll have to keep Ana Mighty Sound in mind next time I'm in the market for one.  I've also had great results retipping 103's - like I said lotsa options out there that offer better flexibility.
Yes - I agree there are many better choices for ~ $1k cartridges.  For half the price, there are also great retipping options for the 103.  

Zu does modify the Denon 103 and brands their name them for a premium (~ 367% in this case). Well I guess that clears them of any maintenance type issues that one may encounter. While that seems to be okay with most people, I (along with @billwojo) have a hard time accepting that – but it is what it is. Again, my point is that this is a design flaw that has to do with the epoxy potting used in the Zu modded cartridges. My cartridge probably winded up in a landfill – I never got it back and never asked. 

I have indicated that my experience is an isolated incident, but it can happen. Had I known about the issues with epoxy potted cartridges, I may have gone down a different path or just settled for the standard grade. It’s quite a zinger to lose $1100 just like that. I’ve learned and have a microridge retipped 103R (by VAS) with excellent results. I will likely not have to throw away the cartridge should one of the channels go bad. There are better choices out there for 103’s and other cartridges in the ~$1k range.