The BP-1 is a 4 frequency band compressor board used in the TPC-100 Prism Clone.  The board is supplied with the DG-418 chips and Dual diodes surface mount placed on the board, along with the programmed microcontrollers required. Two of these are required for a two channel clone processor.  

These are boards only, not a kit. Parts to be ordered are listed in the build guide for each board.

Build Guide link:  http://www.ortelligent.com/BP1%20build%20guide.pdf

Full manual for the TPC100 Prism Clone:  http://www.ortelligent.com/TPC100%20Manual%20Rev%20A.pdf