Why this guitar likes Hall reverb at medium decay. The Classic S has the most natural high-frequency air of the three — ML Standard single coils at 6.5K/6.5K RWRP/7.2K through alder give you a glassy, three-dimensional sound that wants a room around it. The Big Sky's job here is not to add character — it's to give those single-coil reflections somewhere to land. Hall mode, decay 11 o'clock (~2 sec), warm tone. Anything longer and the single-coil top end starts to smear into the dry attack. Anything brighter and you get the worst of digital reverb — that synthetic shimmer that tells the ear it's a pedal.
Why Hall, warm, medium decay for the Classic S
The ML single coils have a top-end shimmer that's already doing half the work of "air." If you stack a bright reverb on top, the high-end stacks into harshness — that scratchy sibilant tail that says "digital." Tone at 10 o'clock rolls the top off the reverb just enough that the dry guitar's natural sparkle reads as sparkle, while the tail underneath reads as room. Decay at 11 o'clock (~2 sec) is the sweet spot for single coils — long enough to be a place, short enough that fast lines don't smear. Hall over Plate because Plate's denser early reflections fight the single coils' clarity. Hall has more space between the early reflections, so the dry attack lands clean and the tail blooms behind it.
Pre-delay at 10 o'clock (~30 ms) creates a tiny gap between dry and wet so the pick attack stays defined. Mod at 8 o'clock keeps the tail alive — without modulation, long Hall tails go static and start to sound like a freeze pad.