If you want the power of the Impact LX+ series without the extra keys and faders, the LX25+ is for you.
 
Features
25-key USB MIDI controller with intelligent mapping for major DAWs
Comes pre-mapped and configured so you don't have to spend hours assigning MIDI controls
DAW integration with Bitwig Studio, Cubase, Digital Performer, Garageband, Logic Pro, Nuendo, Reason, SONAR, Studio One, FL Studio, and Reaper (includes Bitwig 8-Track)
8 performance pads (assignable Green/Orange/Yellow/Red) can easily be assigned to MIDI notes or messages
30mm fader and 8 control pots give you lots of hands-on control
Full transport controls
 
Specs
Type: Keyboard and pad MIDI controller
 Number of Keys: 25
 Type of Keys: Synth
 Velocity Sensitive: Yes
 Pads: 8 (4-color backlit pads)
 Other Controllers: Pitchbend, Mod Wheel, Octave/Shift transpose buttons
 Encoders/Pots: 8
 Faders: 1
 Dedicated Transport Control: Yes, full integration for major DAWs
 Pedal Inputs: 1 x 1/4" (assignable)
 MIDI I/O: USB
 USB: 1 x Type B
 Software: Bitwig 8-Track (VST plug-in compatible)
 OS Requirements - Mac: OS X 10.7 or later, iOS (Apple Camera Connection kit required for iPad)
 OS Requirements - PC: Windows 7 or later
 Height: 2.75"
 Width: 18.75"
 Depth: 10.5"
 Weight: 4 lbs.
 
More info: https://nektartech.com/impact-lx25-plus/