One buffer? Two buffers?

I'm trying to understand the application of buffers. I think I understand what they do - they drop the impedance of the guitar's signal and compensate for cable capacitance, thereby getting the tone of your guitar more completely to the amplifier.

Based on that I would think that you'd want one buffer between the guitar and the amp, even if you were using no effects.

But what about with pedals? Should you use two buffers? Put one buffer at the front of the cascade of pedals, and then another at the end (to compensate to some degree for the electronic shenanigans that the pedals impose on the signal). Arrange the switching so that one buffer is in the line even if the entire pedal chain is switched out of the circuit.

If someone knowledgeable in electronics could enlighten me, I would be grateful.

I'm working with this issue now. I'm planning on building a loop box with two buffers - one in front of the send, one running out to the amp, even if the loop is out. The issue is where to best put the 'permanent' buffer, and what the input impedance should be. It may be that a single buffer is enough, in front of the whole deal (this is the way I'm leaning).

I'm planning on useing the GGG buffer: http://www.generalguitargadgets.com/index.php?option=content&task=view&id=74&Itemid=104

steven

Buffers have been discussed here several time ... might be worth it to use the search engine.

Here's one :

http://www.tdpri.com/forum/stomp-box/175705-line-buffer-expensive-power-supply.html

Here's an interesting article about Brent Mason's pedalboard that discusses using a line buffer.
http://www.premierguitar.com/Magazine/Issue/2007/Nov/A_List_Pedalboard.aspx