Hello, I plan on building the optimized Morgan Jones headphone amplifier with feedback (found here http://gilmore2.chem.northwestern.edu/projects/showfile.php?file=cmoy5_prj.htm) for my electronics project in junior lab. I have a good understanding of the amplifier cirucit; however, we have not discussed transformers or rectifiers. Looking at the power supply circuit it looks like it was designed for a 220V AC source. I need a power supply for a 110V AC source (I live in America). I was hoping the fantastic head-fi community could help me design a circuit that will power the Morgan Jones amplifier from a 110V AC outlet. I would appreciate specific part suggestions for the transformer and rectifiers.
I have one slightly off topic question as well. Does anyone have suggestions for the brand (and type) of capacitors I should use for this project, and can any one suggest a brand of tube for this project? There are so many options, my first instinct was to just buy moderately expensive caps and tubes, but I don't have any idea on how that would affect this specific amp. I am willing to spend a fair amount of money on this project (we get partially reimbursed for our project), and I would like to come away with a great sounding amp. But if buying cheapish caps and tubes will suit this particular amp just as well as the more expensive components I would rather not waste money.