Roland A-49-BK
is a lightweight, 49-key MIDI keyboard controller known for its premium, velocity-sensitive synth-action keybed and portable design. It features assignable controls, a D-BEAM controller, and USB bus power for mobile use with Mac, PC, or iPad. 
    Keyboard: 49 full-size, velocity-sensitive keys with a rounded shape for comfortable glissandi.
    Controllers: Pitch bend/modulation lever, two assignable knobs, two assignable switches, and Roland's expressive D-BEAM controller.
    Connectivity: USB Type B port for computer connection and power, traditional 5-pin MIDI Out connector, and 1/4" jacks for sustain and expression pedals.
    Portability: Exceptionally lightweight (approx. 5.5 lbs/2.5 kg) and slim-line, making it ideal for mobile setups or small studio spaces.
    Power: USB bus powered, eliminating the need for an AC adapter (drawing minimal current).
    Compatibility: Works with Windows, Mac, and iOS devices (requires an optional Apple iPad Camera Connection Kit for iPad use).
    Software: Includes a serial number card for Ableton Live Lite software.
    Special Modes: Features a dedicated "SuperNATURAL" button for automatically assigning controllers when connected to a compatible Roland sound modul

Number of Keys    49
Key Type    Full-size, velocity-sensitive, synth action
Aftertouch    No aftertouch support
Controllers    Pitch Bend/Modulation Lever, D-BEAM controller, 2 assignable knobs, 2 assignable switches, Octave +/-, Transpose, Function, and SuperNATURAL buttons
Connectivity    1x 1/4" HOLD pedal jack, 1x 1/4" TRS EXPRESSION pedal jack, MIDI OUT connector, USB COMPUTER port (USB Type B)
Power    USB bus powered (drawing approximately 98 mA)
Compatibility    Mac, Windows, and iOS (iPad requires optional Apple iPad Camera Connection Kit)
Dimensions (WxDxH)    32-15/16" x 7-3/16" x 3-5/16" (836 mm x 182 mm x 84 mm)
Weight    5 lbs 9 oz (2.5 kg)
Included Software    Ableton Live Lite serial number card
Display    Power Indicator LED, Octave Indicator LED