Yes, it will depend on your source. Not familiar with zx300 but Sony is usually underpowered. Oh, and their UK versions are volume limited, more like handicapped (read wm1zm2 thread, people are super frustrated).
So, depending on your source and if you are dealing with 10, 40, 60, and 80 models which have lower sensitivity, you might want to use higher power balanced output of your dap, unless you are OK with external amp.
Another option, ask another cable maker to reterminate it for you. Maybe even Linum can do it for a small fee. You are a limited since hardly anybody offers quality ipx cables. Also, I would be cautious about EA cables with modular ConX or Linsoul adapters. They do have ipx tip option, but it's not the original from Linum but 3rd party manufacturers. Read this warning
https://www.linum.dk/discover/news-and-articles/warning-t2-plug-copy/