FP-4

The FP-4 is a digital portable stage piano which is built by Roland Corporation. It is an entry-level Digital Portable Stage Piano and contains many state-of-the art functions such as Progressive Hammer Action, GS and ISM. It uses the General MIDI 2 sound system.

For the next one up in the range: visit FP-7

Progressive Hammer Action

References

1] [http://www.roland.co.uk/digp_room_catdet.asp?ID=FP4 Roland UK | FP-4 Digital Portable Stage Piano]

2] [http://www.roland.co.uk/tech_progressivehammer.htm Roland UK | Progressive Hammer Action]