To what extent did HAD voice an amp for a customer?

[Luddy]

I read from time to time that HAD would build an amp with a particular customer's needs in mind. I haven't read anything about how this was done. What aspects of an amp's design and construction where the result of working with the player in the shop?

[jcsifu]

Good place to start to learn to tweak...

http://ampgarage.com/forum/viewtopic.ph ... ht=section