The Modulus-286 Kit (Limited Edition) was an ultra-compact high-end power amplifier. As the name indicates, it was a limited production run with only 28 kits produced. Unfortunately, I was not able to sustain production due to cost.
If you are looking to build your own Modulus-286 amp, please have a look at the Modulus-286 Product Page.
I do occasionally build a few Modulus-286 stereo amps. You can find an example of one here: Stereo Modulus-286.