Most MIDI 1.0 controllers are limited to note on/off, velocity, and three global expressions – pitch bend, modulation wheel, and aftertouch. Some advanced controllers have used polyphonic aftertouch to provide one additional dimension of per-note expression.
MIDI Polyphonic Expression (MPE) is a recent update to the MIDI 1.0 protocol that allows per-note control of pitch bend, modulation wheel, and aftertouch.
KMI makes several MPE and Polyphonic Aftertouch capable controllers that utilize some or all of these forms of expression.
KMI MPE and PolyAT Controllers
K-Board Pro 4 is a dual zone MPE controller. Every key of the silicone keyboard sends velocity, pitch bend, modulation wheel, aftertouch, and release velocity. For synths that only support Polyphonic Aftertouch, the K-Board Pro 4 can map the key slide/Y axis (cat claws) to PolyAT to create an "MPE like" experience.
MPE Compatible Hardware
Sequential OB6 
Modal Skulpt 
ASM Hydrasynth 
Modal Cobalt8 
Black Corp Deckard’s Dream 
Sequential Prophet 6 
Futuresonus Parva 
Modalt Argon8 
Black Corp Kijimi 
Mod Devices Mod Duo/X 
Tasty Chips Electronics GR-1 
Modor NF1
MPE Eurorack
Polyphonic Aftertouch Hardware
Sequential Prophet 5 & 10 
Waldorf Iridium & Quantum 
Sequential Prophet 8 & REV2 
Waldorf Blofeld 
Arturia Origin 
Novation Peak 
Korg Wavestate
| Alesis Fusion Alesis Ion Alesis Micron Alesis Q Alesis QuadraSynth Alesis S4 Alesis Andromeda Arturia Origin Casio CZ-1 Casio CZ-5000 E-MU Emax E-MU UltraProteus Edirol PCR-800 Elka MK-88 E-Mu Morpheus Ensoniq ASR-10 Ensoniq EPS Ensoniq Fizmo Ensoniq KT-76 | Ensoniq SD-1 Ensoniq SQ-80 Ensoniq TS-10 Ensoniq TS-12 Ensoniq VFX Fender Rhodes Chroma Fender Rhodes Polaris General Music/GEM S Workstations Infinite Response Vax77 Kawai Kawai K5000 Korg DW-8000 Korg Kronos Korg OASYS-PCI Korg Wavestation Korg Wavestate Kurzwil GX1000 Kurzwil HX1000 Kurzwil K1000 Kurzwil K1200 Kurzwil K150 | Kurzwil K2000 Kurzwil Mark Pro One Kurzwil Mark Pro Two Kurzwil Midiboard Kurzwil PX1000 Kurzwil PX1000+ Kurzwil SX1000 Mellotron M4000-D Mutable Instruments Ambika Roland Alpha Juno 1 Roland MKS-50 Roland A50 Roland Alpha Juno 2 Roland D-70 Roland HPD-10 Roland HPD-15 Roland JD-XA Roland Juno DS Roland JV-1010 | Roland JV-1080 Roland JV-2080 Roland SoundCanvas SC-55 Roland U220 Sequential Prophet 12 Sequential Poly Evolver Sequential Prophet X Sequential Prophet 8 / REV2 Sequential Prophet 5 / 10 Waldorf Iridium / Quantum Waldorf Blofeld Yamaha CS-80 Yamaha DX7 Yamaha TX81Z Yamaha DX1 Yamaha EX-5(r) Yamaha TG500 Yamaha TQ5 |
MPE Compatible DAWs
MPE Compatible Software Synths
Apple Mainstage 
Xfer Serum 
Native Instruments Reaktor 
UVI Falcon 
Steinberg Halion 
Madrona Labs Aalto 
Madrona Labs Kaivo 
FXPansion Strobe 
FXPansion Cypher 
Roli Equator 
Audio Modeling SWAM