C-010 Dual lag/slew limiter (4HP) -> C-011 Precision dual lag/slew limiter (4HP) or C-012 Precision dual up/down lag – slew limiter (4HP)

C-040 Dual AD/AR envelope generator (4HP) -> C-041 Dual AD/AR envelope generator (4HP)

L-110 LFO (4HP) ->  L-111 LFO2 (4HP)

M-215 Trig/gate to MIDI (8HP) -> M-217 Trig/gate to MIDI w. velocity (8HP)

M-216 Trig/gate to MIDI (8HP) -> M-217 Trig/gate to MIDI w. velocity (8HP)

R-330 Reverb (4HP) – no follower

U-010 CV shifter/amplifier (4HP) -> U-011 CV amplifier/shifter (4HP)

Drum synths (Synare, Super Space Drum, Coron DS8…)