I should have read the 9000pro manual before posting (or was that boasting?) about other PLG hosts. The 900M's EL and XG modes both support control changes 72 and 73 for Release and Attack respectively, but I could not find mention of the controller for Decay (Non-Registered Parameter Number 228 on XG).? The Easy Edit mode of the 9000pro's Custom Voice Creator may be of use to send these on the MIDI channel used by the EL900's VA element - if that works you may have no need to buy a PLG board. If otherwise, there seems to be vast differences between the PLG150VL's single VA element per voice and the EL900's structure of 1 VA, 1 AWM and 4 FM elements per voice.
