Matt Olivo

On the right side of the stage (from the viewer's perspective) you can see Matt's Marshall 1959 head.

Go to 8:50 minutes in the video to see it closely. The knobs and aesthetics correspond to this Marshall head.

You can see it throughout the linked video and here (the full live performance link): https://www.youtube.com/watch?v=F4w8E0H_sQQ.

I guess it's a 2203 but it could be a 2204 as well. 43 seconds into Helga Lost Her Head you can see it's an horizontal inputs version, though.

In this video you can see Matt playing a Squier Stratocaster. You can see very closely the Squier logo at 2 seconds into the video.

From 50:47 you can see for more or less 10 seconds that both guitarists (Matt Olivo and Aaron Freeman) are using a BOSS SD-1 (Made in Japan, because it was 1987).

At 6 minutes and all throughout the video you can see Matt playing a Gibson Flying V. There are spots where you can see the brand name on the headstock, but I don't recall the minutes.