EAR YOSHINO: Calling all owners of the 509 and 890 models

The thread starts .....

I'm interested in adding an EAR power amp to my system. Has anyone any experience with the 509s or 890? I've read somewhere that the 509s are a bit dated soundwise whereas the 890 is more modern sounding.I tend to prefer a fast, tight sound over a warm sound. Looking forward to some informed advice.

Continues HERE