No, not necessary
It's a DC Blocker and I was having what I thought were problems with DC on the mains, at the time, but have long since dealt with it as it was a noisy transformer at fault
As long as your Transformer doesnt mechanically buzz, you are fine
In that boom list, some parts are marked in yellow / brown. whether it is an indication that these parts are in the signal path.how should i deal with these parts? or what is the purpose of that color enhancement. those capacitors marked in green are yet to be ordered. again certainly a stupid question, but does the value of the voltage of those capacitors matter. as long as they are above that given value. eg given value 250v Can I use those with a value of 600v. There is one good side to these questions of mine. usually i don't ask the same thing as once 
In that boom list, some parts are marked in yellow / brown. whether it is an indication that these parts are in the signal path.how should i deal with these parts? or what is the purpose of that color enhancement. those capacitors marked in green are yet to be ordered. again certainly a stupid question, but does the value of the voltage of those capacitors matter. as long as they are above that given value. eg given value 250v Can I use those with a value of 600v. There is one good side to these questions of mine. usually i don't ask the same thing as once
The beige filled columns are to indicate that you need a minimum of 1% tolerance in those positions. They will be EQ related. Personally i match every component for best results.
Higher voltages are absolutely fine
If I print that on my printer will it come out as natural (or actuel size maybe I should say) size then?
Tube sockets. Belton P-ST9-700-PC. That recommended socket has a 9 pin. + one that is apparently grounding that socket. that circuit board also takes into account that grounding. whether that grounding is important. i would like to use that recommended socket but i can't find them here in europe.
I couldn't find them in the UK either.
Maybe one of our US brethren could post some over?
Yep, the layout is on US Letter format, but just ensure you have 100% scaling on whatever size paper and you should be good to go. Always double check an X and Y dimension after printing to be sure!
Greg
