I bought mine from a local shop. They sell for 300.00 to 400.00 depending on where you get them. They have six 100 watt digital amps.Detailed info can be found on the pioneer web site and Newform Ribbon web site.
If find their best attribute is with redbook CDs and DVD-As using digital coax input. Others have fond a way to use the Beringer 2496 crossover.