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
@georgehifi , kosst claims his system sounds almost the same, with and without the preamp section of his ancient Marantz receiver, when he experimented with the bypassing of the Marantz. This should tell you something about him. Let him be, let him rant, he is an annoyance to many people. He just needs to be right, that is all. No wonder he is afraid to try an upgraded power cord, as he fears he will not hear a difference, let alone an improvement. I must admit that I do enjoy the 2 of you going at it, as it is very comedic. I wake up every day and wonder who is kosst fighting with today, and yes, there he is. Look at the recent Focal thread. Hilarious. BTW, I am wondering if the F5 that kosst built would pass UL certification, which Nelson’s does.? Enjoy ! MrD.
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Because I'm waiting for Ralph to explain the Aleph L to George?


If he does, it better be the same as what Nelson sent to me a couple of days ago when I emailed him about it, otherwise your both out there with the fairies.

Just go and have another drink, and stop being such an agitator.

Cheers George 
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kosst, believe me when I say I am not going ape. As I said, I find your argumentative nature annoying, but amusing, and actually look forward to your next " outburst ". I cannot speak for George.  Enjoy ! MrD.