small footprint 2ch amplifier

I remember reading a couple threads about small stereo amplifiers but cannot find them again.

I would like to find a 2 channel amplifier with a small footprint (less than 2" tall, about 4" wide, and about 12" long). It doesn't need a lot of power, I'm guessing 35-50 watts per channel.

I'm hoping for inexpensive or used. I think ARC has some that are for motorcycles but they are expensive. Another brand made one long and slim, but I cannot remember the brand.

Any help? Thanks!