Korg EXB-MOSS Explained: Physical Modelling Power

video upload by Ian Dixon

"The Korg KARMA normally works as a sample-based workstation, but with the EXB-MOSS expansion board installed it gains a completely separate physical modelling synth engine. In this video I explain what the MOSS board is, where the technology came from, and why it matters for Korg Prophecy, Z1, Trinity, Triton and KARMA users.

MOSS gives the KARMA its own Bank F with 128 programs, six extra voices of polyphony and a set of oscillator models that go far beyond PCM samples. I walk through the MOSS history, show how the different models work, and demonstrate electric piano, VPM/FM-style tones, reed, brass, plucked string, sync, analog-style, organ and performance-controlled sounds using the KARMA and my editor.

Timestamps:
00:00 Intro and MOSS demo music
00:20 What the EXB-MOSS board adds to the Korg KARMA
00:33 MOSS history: Prophecy, Z1, Trinity, Triton and KARMA
01:29 Bank F, 128 programs and extra six-note polyphony
02:17 Opening MOSS programs and using the KARMA editor
03:07 The 13 MOSS oscillator models
03:55 Electric piano and VPM/FM-style hybrid sounds
05:19 Real-time control, reed models and expressive parameters
06:19 Sync modulation and VPM controls
07:23 Brass modelling and muted trumpet-style tones
07:52 Analog-style oscillators, wave shaping and filters
08:41 Organ drawbar modelling
08:58 Plucked string and guitar physical modelling
10:42 Effects and performance controls
11:43 Switches, joystick and real-time modulation examples
12:35 Vocal, bell and other MOSS sounds
13:01 Combining MOSS parts in Combi mode
13:52 Why Korg should bring MOSS back
14:06 Wrap-up and viewer questions"