Roland Mobile Studio Canvas Sd-50

The Roland SD-50 is a compact, portable sound module and USB audio/MIDI interface designed for musicians and producers. It features 1,125 high-quality sounds, including GM2, GS, and Roland's Solo Tones (Shakuhachi, Violin, Trombone), with 128-voice polyphony and 32 drum sets.

 It offers 2-in/2-out audio at 24-bit/44.1 kHz, XLR and Hi-Z inputs, built-in DSP effects, and supports playback of MIDI, MP3, WAV, and AIFF files from USB drives. 

The unit is bus-powered via USB or can run on batteries or AC adapter, making it highly portable. It includes Cakewalk SONAR LE DAW software for music production and integrates well with Mac and Windows systems. Though discontinued, it remains valued for mobile recording, live performance, and as a versatile sound source.