Hi Folks -
I take a very hands-on approach to the upgrades, and it is critically important to me to have complete control of the process - this is why I do not offer kits or plans. All of the SMc Audio upgrades are done at my shop in California. I realize that this represents higher shipping cost for my international customers, but it is the only way I can ensure the quality of the work.
For a DIY like Hi5, the traditional methods apply - take the amp apart, study the parts layout and values, decide what you want to change, order and install the parts. Have fun, and good luck.
Best regards,
Steve McCormack
SMc Audio