Both... Wave 2.0 4 CEM3320 VCF 4 CEM3310 EG Wave 2.2 and 2.3 8 SM2044 VCF - data sheet - http://www.maxmidi.com/diy/ssm/ssm2044.pdf 4 CEM3360 Dual VCA There might be some 2.0 w/ SSM but I'm not sure... James R. Coplin