Not rack, but modules, Technics did it earlier on, remember i.e. AC80.
Ketron does, Böhm does, and there are more, but who?
GJ

[This message has been edited by Gunnar Jonny (edited 03-09-2005).]
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Cheers 🥂
GJ
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"Success is not counted by how high you have climbed
but by how many you brought with you." (Wil Rose)