Boneyard new

[bs_ane]

Hi.i want to build the new boneyard layout ,but I saw some changes.what is the benefits for this changes??the previous version has not the resistor before The 220nf cap.also the 220nf cap after 330pf.

[mgwhit]

It looks like it's just a more standard arrangement for a high-pass filter (R1 & C1) and a low-pass filter (C2 & R2).  The idea is to only amplify the frequencies we care about.