How much do I need to spend to get a preamp that sounds better than no preamp?


Hello all.
I'm using an Audible Illusions L1 preamp and I think my system sounds better when I remove it from the signal path. Oppo BD105 directly to SMC Audio DNA1 Gold power amp. I have read that there is level of quality you need to hit before there will be an improvement in sound. I can't seem to find what that level is. Any ideas?
Thanks in advance,
Ben
honashagen
“The result of trolling is that someone has to correct your misrepresentation- and then we go on and on, around and around. That's classic trolling.”

george, you’re clearly a knowledgeable person and have a lot to contribute and can obviouly say whatever you want but this sort of behavior tends to damage your credibility, if you actually care. You accuse others with a vast technical experience in the field for expressing their opinion for personal gains and one could argue the same for your opinion and your passive attenuators. Not a productive approach to exchange knowledge. And no, I’m not stalking you, just seem to keep running into the same thread and reading the same arguments.
I believe what Nelson Pass is indicating, is that with many sources, and in a perfect world ( system match ), passive would be ideal. However, he knows, as most of do, the perfect world does not exist. Just my interpretation of all my readings. Enjoy ! MrD.
Thank you mrdecibel, and that's exactly what I post  "system (impedance) match" whether it's direct or with passive, which today is more the norm than the exception.
 There are just some here that are protecting their interests, like a dog with a bone.

Cheers George
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kosst_amojan
Like mrdecibel said, the perfect world doesn’t exist.

Don’t cheery pick mrD, a perfect world does exist if the impedance’s are good, low output and high input (>1:10 ratio), and in most cases they are.
Go away now, you are so annoying.