Thanks for the info. The HiBy is a beauty and I noticed that it has a dedicated 4.4mm line-out which would be ideal for my scenario. My Shanling DAP has, according to Shanling, a software implemented line-out, and they say that it can be used in my desired scenario, but it remains to be seen by me personally if the 4.4mm is actually line level out like I know the SE output is. The TAP-1 just seems to be the most cost-effective way for me to get some current into certain headphones and not spend $1K ++ on another portable amp or amp/DAC like some of the iFi's like Diablo or Signature, etc., not to mention Cayin C-9!