Probably my favorite solo by Alex Lifeson in probably my favorite song by Rush . This effect combination makes me imagine a car entering a concrete tunnel, with the reverb and comb filtering that is occurring.
PRS Swamp Ash Special, Strymon DECO (Through Zero Flange), AMT O2, Strymon Timeline (dTape), Strymon Mobius (dBucket Chorus), Strymon BigSky (Plate Reverb), Mesa Boogie Express 5:50 Plus.