Confusing question. "Never heard of" or "never heard" ?
I’ve never bought anything I know nothing about. I’m not much of a gambler when it comes to audio. I simply don’t have the financial resources. If I unexpectedly come across something that seems promising at a time when I’m looking to upgrade that type of gear, I’ll check to see if it’s available with a return policy. If not, I’ll (9 times out of 10) move on. If so, I’ll read all the reviews and user threads I can find. If these suggest it might work for me, I’ll order it to try out at home. My only exception in the past 15 years or so has been my Jay’s CDT2MK3 transport. No return policy on that. But as things turned out, I didn’t need one.