Features/improvements: [Source]
v2.0 allows use of the Alesis Sound Bridge software, which is a utility program,
that compiles custom samples from a variety of sources into the
QuadraSynth Voice format, and then downloads those Voices to an Alesis - compatible
PCMCIA Sound Card via MIDI SysEx to a QS6, QS7, QS8, QuadraSynth Plus Piano
or S4 Plus that is running V2 firmware.