Yamaha Disklavier MX100A / MX100B Compatibility Guide

All Disklavier Models

MX100A and MX100B are early Mark I built-in Disklavier systems for 2DD floppy E-SEQ recording and playback, with practical upgrade paths through PianoStream, DCD-1, and external tone generators.

Things to Know

These have unusually tall floppy disk drives. If purchasing a USB emulator, purchase from Nalbantov, as a Gotek or generic emulator will not fit.

I’ve found these require a floppy disk to be inserted in order to use PianoStream or other devices plugged into the MIDI ports. This can be bypassed by powering on the system while holding down the MIDI and REC buttons. See Why isn’t PianoStream Working? for more.

Not to be confused with the similarly named MX100II.

At a Glance

Uses
2DD floppy
Recording
E-SEQ
Plays
E-SEQ
PianoSoft Types
Solo
Upgrade Options
PianoStream DigitalDCD-1MU50 / TG100