Passive + Buffer need help


Further to my last thread on my DIY passive preamp:

Some of you have mentioned about the impedance issue. Some suggested an active buffer stage as the solution and I have been researching into this topic ever since.

My finding so far is that Pass lab B1 seems like an interesting design:

I think Musical Fidelity used to offer a tube base buffer too but I didn’t know much about impedance matching then.

Then I came crossed this post which seems to suit my scenario: ( http://www.stereo.net.au/forums/showthread.php?t=17530)

It has mentioned about this Burson Buffer from Australia.

http://www.bursonaudio.com/burson_buffer_160.htm

Based on the StereoNet post, the Burson buffer seems more natural and transparent which I prefer. Anything else would defeat the purpose of going passive! : (

Has anyone here tried to add a buffer to their preamp? Any good? Has anyone tried this Burson buffer? All their customer feedback are so positive that it’s hard to believe.
chatta

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