From, again, the Tone King video examination of his effects and amps. After some squinting and detail comparison, I can say with 100% certainty that this is an AC-2 as opposed to an AC-3 version of the pedal for a few reasons. The COSM logo under the mode knob isn't present (which, if it were, would certainly make it one of the runs of AC-3 pedals, though not all of them have it). The AC-2 pedals seem to have a deeper embossed BOSS logo (sorry, that wasn't intentional). After examining both pedals, it was clear he's using an AC-2, as there isn't a reverb control on the level knob (the AC-3 has a stacked knob, with the ring controlling reverb level) which makes sense due to the number of reverb and delay effects later in his signal chain.more
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