Pass B1 Passive Buffer Preamp. A good and simple option for chipamps?.

[A Sanchez]

The design is very simple and deals with the impedance problem of "passive preamps" ie pots, widely use with chipamps.

Surely lots of you are already following this topic but I thought it would be interesting to discuss it on the chipamp context.

This is the pre:

http://www.enjoythemusic.com/diy/0708/first_watt_b1_preamplifier.htm

and this is the thread:

http://www.diyaudio.com/forums/showthread.php?s=&threadid=124889&perpage=25&pagenumber=1

Regards

Antonio

 

[mattjk]

i posted about it, no one seems to care. that circuit board it too big though!

http://www.diyaudio.com/forums/showthread.php?s=&threadid=127036

 

[Marlowe]

I've built a B1 buffer for my Gainclone.
Although the B1 is only a prototyping one, not well-tweaked yet, it sounds very good with Gainclone.

 

[AndrewT]

most readers of the chipamp section don't have a clue about getting their chips to perform properly.
Source impedance will be completely beyond the majority.

 

[Marlowe]

Hi Andrew,

What kinds of improper are usually caused by most readers?

I am afraid that my chipamp performs improperly but I don't discover.
Please talk more about "chips to perform properly".

 

[AndrewT]

do some research both here and from other reliable sources.
Most chipampers are not interested in learning.