when you bypass the NAD's preamp you give up everything except the a and b speaker switching. I too thought i would hate not having the remote anymore but really, its not that bad. you find a volume level and keep it there.
The kit i built is called the Foreplay put out by the Bottlehead company, the stock kit costs 150 dollars but if you want to do any of the upgrades (which you should) its more. They are fairly simple to build if you have a basic electronics knowledge and can solder, and have patience.
If you want two outputs you would just have to do some modding to the original circuit and drill a couple more holes and stuff, all the instructions are on bottleheads website. Go to their forums and browse around etc..
It IS a nice option of having a preamp available, which makes the 370 a very nice amp, even if your not plannng to use the pre section.
Heres the link to Bottleheads website.
www.bottlehead.com
