This piano is from the P series of technically advanced models with the excellent touch and tone feature, for which Yamaha is very popular. The keyboard has 88 graded hammer keys that make playing this digital piano even more realistic. There are also four levels of touch sensitivity associated with the keys (fixed, hard, medium and soft), so you will be able to find your optimal setting for you. The new and advanced model of Yamaha P155b is heavily designed for doing stage performance. Within a very short time, this digital piano becomes very popular among the piano lover for its great sound, produced by the Dynamic Stereo Sampling Sound Technology and the Realism like an Acoustic piano. The Yamaha P155b has a wooden styled finish on the top of the keyboard. It really adds to the character of the keyboard and gives it that quality look and feel. It is available in three different colors too.
According to several user reviews, they have praised Yamaha P-155B for the piano includes some best accompaniment features as in the 17 preset voices that make the piano really satisfactory; The good touch and feel of the digital keyboard and the realistic sound quality make the piano a good one. Also, some user have complained it for the piano is too heavy for using and one cannot keep the key actions for long time.
Image source: musik-service.de
To restoring Yamaha P-155B to it’s factory settings, just simply power ON while simultaneously holding the C7 key (right-most-key on the keyboard) until “CLr” appears in the display.
Warning! This operation will cause all stored settings and all user song data will be erased and returned to the factory settings. Be sure that you want to do this. Hopefully the article of “Resetting Yamaha P-155B Contemporary Digital Piano” can help you.
Reference: Yamaha P-155B manual