One of best 88 key hammer action controller made by Samick who is one of best piano manufacture. It doesn't have as so many feature as PC88 or A90 but it certainly does its job. Construction quality is excellent and it looks very cool. It's hard to find here in the US though but if you see one somewhere and if you need quality controller then don't skip it. certainly grab it.
Here is some specs of KK2
Keyboard : 88 Hammered Action
Pitchbend Wheel
Modulation Wheel
Data Input : Data Wheel
PlayMode : Full, Split, Layer
Program Change : 1~128(with Bank Change)
MIDI TXD Channel : 1~16
Touch : 10 Types
Transpose
Control Slider : 2(Modulation, Breath Control, Portamento Time, MIDI Volume, Balance, Pan, Expression, Reverb Depth, Tremolo Depth, Chorus Depth, Celester Depth)
Pedal Switch Jack(FS 1, 2) : User Assignable(Sustain, Sostenuto, Soft, Portamento On/Off)
Pedal Control Jack(FC) : User Assignable (same as Control Slider Function + Aftertouch)
Panic : All note off(with Pitchbend Sensitivity, Reset, etc...) Panel
Memory : 6
Display : 16 X 2 Character LCD
Connector : MIDI(In, Out X 2), FS 1, FS 2, FC
Dimension(W X D X H) & Weight :1270 X 350 X 114mm, 23kg
Color : Black