I work for Niles Audio (NilesAudio.com). They mostly make whole house audio systems, IR interconnect devices, amplifiers and speakers. I recently obtained one of their Si1230 amplifiers for parts that was being thrown out. This unit has 12 LM3886 chips (it's a 6 channel stereo amp that runs 30w/ch at 8 ohms.) The individual amp boards and the PS (large toroid transfomer) looked ok, the control circuits were bad. I can build a nice 5ch amp from these parts, the LM3886's should run 100w into 8 ohms bridged.

I agree that specifying power output at 1% is BS, but it seems to be a common yardstick. Actually if the graphs in the LM3886 specs are correct the power does not increase much between the .1% IMD and 1% IMD points. The Niles Si1230 is actually spec'd for 30 watts out per channel into 8 ohms and 38w per channel at 4 ohms with ALL channels driven at 1khz and 0.1% IMD. (IE: worst case). This is way below what NS says the chips should do at with a +/- 30v supply.