The action used is Yamaha's GHS (Graded Hammer Standard).

The P-85 weighs about 25 lbs (11.6 kg) and has two 6.3 mm headphone jacks in the front.

[2] The P-85 is now replaced by a newer model and parts and service are no longer supported.

However a service manual is online with detailed schematics as well as a well-marked PCB to allow anyone with some electronics background to resolve basic problems as the products age.

This article relating to electronic musical instruments is a stub.