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B1 Buffer: discrete vs. integrated approach?
B1 Buffer: discrete vs. integrated approach?
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Old 30th December 2009, 02:33 PM   #1
Kashmire is offline Kashmire  United States
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Join Date: Dec 2003
Location: Midwest
Default B1 Buffer: discrete vs. integrated approach?

Anyone remember Corey Greenberg's "Passive Preamp" from Stereophile? (also referenced here)

Too bad Stereophile canned Corey, blackballed Bob Carver, and all that other hanky-panky years back. Ugh. Hi-Fi political hacks.

Anyway, has anyone compared the Pass B1 discrete buffer with an integrated open-loop buffer, such as the Burr-Brown BUF600, BUF624, or Analog Devices BUF03?
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Old 30th December 2009, 08:13 PM   #2
dms is offline dms
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Join Date: Mar 2002
Location: Vernon Hills, IL
Default Discrete VS Integrated

I built Corey's buffer and used it for several years. Now I use a goldpoint switched attenuator, and a passive crossover on the top end and an opamp crossover on the bottom end. Recently I inserted the "Corey" buffer to see what it sounded like. The sound was noticeably "hard" and edgey. I did not care for it and removed it quickly. I have not tried any modern buffers, but I am in the early planning stages of a preamp with some gain. I will try the BOSOZ since I bought a circuit board some years back. I may try the B1 as well.
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