Akai Deep Impact

Chris has owned this rare and coveted bass synth pedal since the Origin of Symmetry era. It is responsible for many of his basslines, including "Time Is Running Out", "Plug In Baby", "Hysteria", "I Belong To You", etc.

This Bass Player interview states that Collins uses this pedal.

At 4:12, two Akai Deep Impacts can be seen on his board

At 5:19 Mike Talks about this pedal, which he uses on 'Boogie on Reggae Woman'.

In this Ibanez advert, some pedals in Brownstein's pedalboard are visible, including the Akai Deep Impact.