@oddiofyl I'm really happy with my OCK-2. My son and I both feel that my system sounds as good as it ever has. His hearing is excellent, so I often get his opinion.
What did you order for cables? I'm using RG400 cables that I found on eBay. Made in USA. I did a little reading on 50 ohm cables and the RG400 seems to be a good conductor. I haven't done any comparisons, but these are well made and sound good.