Still happy with my purchase of the ART9. It makes it perfectly clear what is in the grooves of the record you are playing. On ordinary records this cartridge unlike others, as I have worked my way up the cartridge quality ladder, does not penalize these records, only presenting what the pressing has. It is still stunning when I play a 1st class pressing. Clear, deep, focused bass. Piano is clear and distinct from the bass keys all the way up to the tink,tink keys. Mono recordings sound natural with a wide soundstage.
The most impressive aspect of the cartridge is how it makes 50 yr old records sound new. The uber tiny diamond is playing a different part of the groove than previous styli have, therefore surface noise has vanished to the point it is not noticeable. Many records are being listened to again, that have not seen a needle in years.