Edirol SD-90 Studio Canvas Sound Module

First in the Studio Canvas line from Edirol, this silver brick packs Roland's legendary Sound Canvas sounds into a versatile desktop powerhouse that launched the USB audio/MIDI era for home studios.

At its core is a GM2/GS/XGlite-compatible sound engine delivering over 1,000 instruments across 30 drum sets, with 128-voice polyphony and 32 multitimbral parts for layering complex arrangements. It doubles as a 24-bit audio interface with 2-in/2-out analog, optical/coaxial S/PDIF, and a built-in digital mixer, plus tailored multi-effects like guitar overdrive, vocal processing, mastering compression, and surround reverb—routable to inputs, outputs, or the synth itself. Front-panel control shines through a large high-contrast LCD and Quick Access encoder knobs for fast tweaks, alongside MIDI I/O, stereo outs, headphone jack, and USB for plug-and-play with DAWs like Cubase or Logic via ASIO 2.0 drivers. Compact at desk-friendly size, it's powered externally and velocity-sensitive for expressive play.

Users love its vast, high-quality sound palette—perfect for blending patches into fresh tones—and the all-in-one convenience that simplifies setups without latency headaches. Some wish for more analog inputs or XLR with phantom, but its reliability and depth keep it a go-to for MIDI enthusiasts even today.