I am planning to build a simple champ amp for a family member that is just starting to play guitar. I have a Champ AA764 circuit planned with the vibrato removed. I am not altering the main signal path circuit but have been contemplating adding some modern elements to the power supply etc. if they make sense. Some of these are exemplified in Rob’s VHT page: 1: Add thermistor and 0.1uF capacitor (C53) to PT primary side. I see this on modern Fender circuits as well as others. Seems the VHT also put a 0.1uF capacitor (C48) on the main PT secondary. Do you guys bother to add this to your builds? 2: It seems the VHT adds 0.1uF caps (C42, C44 etc.) at all of the B+ filters. I don’t see this on other circuits. 3: At the input jacks, they have capacitors going from the tip and sleeve connections to, I am guessing, a local chassis grounding location. So they have a 100pF caps (C2) from the tip connection to chassis and a a .01uF cap (C1) from jack sleeve connection to the chassis. C1 is essentially adding a capacitor between the preamp star ground and the local chassis grounding point. I am sure C2 leaks very high frequency noise from the input signal to ground, but I am not sure exactly what C1 is accomplishing. I don’t see these features being added to a lot of builds on this forum. For manufacturers like VHT, I would expect they would not be motivated to add unnecessary components as it adds cost. They must feel that these features are required or are important for reducing noise. Thanks for any input you might have!