They told me that the accessories are not covered by the warranty but I can buy one from THEIR 3rd party seller. Their 3rd party seller charges $20 for a 6cm cable that ships from China. … From my phone to my iPad to my laptop to my Mac to my ugly and ancient tower at work, any of those should be able to deliver amazing sound to my headphones …
https://www.amazon.com/FiiO-Q1-Mark-II-Amplifier/dp/B0757MH46M