Hi, this is Edwin (the paper dragon head guy)
As I may have mentioned to a few others here, there is a DIY Headphone amplifier kit project or two I am considering doing.
It is considered a great entry level electronics/soldering project.
There are group rates for larger orders of the kit.
Take a look and perhaps we can work out a order: http://bottlehead.com/?product=crack-otl-headphone-amplifier-kit
; DISCOUNTS: When you buy 1 > Regular Price: $279.00USD • When you buy 2-9 > Sale Price: $251.10USD • Save: $27.90USD (10%)! • When you buy 10 or more > Sale Price: $237.15USD • Save: $41.85USD (15%)!
I have done quite a bit of research into this amplifier, it is considered one of the best out there, out performing many $2000 units.